Script 'mail_helper' called by obssrc
Hello community,
here is the log from the commit of package postfix for openSUSE:Factory checked
in at 2023-06-08 21:41:58
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Comparing /work/SRC/openSUSE:Factory/postfix (Old)
and /work/SRC/openSUSE:Factory/.postfix.new.15902 (New)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Package is "postfix"
Thu Jun 8 21:41:58 2023 rev:227 rq:1091332 version:3.8.1
Changes:
--------
--- /work/SRC/openSUSE:Factory/postfix/postfix-bdb.changes 2023-04-29
17:27:43.142436274 +0200
+++ /work/SRC/openSUSE:Factory/.postfix.new.15902/postfix-bdb.changes
2023-06-08 21:42:01.901803479 +0200
@@ -1,0 +2,48 @@
+Tue Jun 6 18:37:03 UTC 2023 - Arjen de Korte <suse+bu...@de-korte.org>
+
+- update to 3.8.1
+ * Optional: harden a Postfix SMTP server against remote SMTP
+ clients that violate RFC 2920 (or 5321) command pipelining
+ constraints. With "smtpd_forbid_unauth_pipelining = yes", the
+ server disconnects a client immediately, after responding with
+ "554 5.5.0 Error: SMTP protocol synchronization" and after
+ logging "improper command pipelining" with the unexpected remote
+ SMTP client input. This feature is disabled by default in Postfix
+ 3.5-3.8 to avoid breaking home-grown utilities, but it is enabled
+ by default in Postfix 3.9. A similar feature is enabled by
+ default in the Exim SMTP server.
+ * Optional: some OS distributions crank up TLS security to 11,
+ and in doing so increase the number of plaintext email deliveries.
+ This introduces basic OpenSSL configuration file support that
+ may be used to override OS-level settings.
+ Details are in the postconf(5) manpage under tls_config_file
+ and tls_config_name.
+ * Bugfix (defect introduced: Postfix 1.0): the command "postconf
+ .. name=v1 .. name=v2 .." (multiple instances of the same
+ parameter name) created multiple main.cf name=value entries
+ with the same parameter name. It now logs a warning and skips
+ the earlier name(s) and value(s). Found during code maintenance.
+ * Bugfix (defect introduced: Postfix 3.3): the command "postconf
+ -M name1/type1='name2 type2 ...'" died with a segmentation
+ violation when the request matched multiple master.cf entries.
+ The master.cf file was not damaged. Problem reported by SATOH
+ Fumiyasu.
+ * Bugfix (defect introduced: Postfix 2.11): the command "postconf
+ -M name1/type1='name2 type2 ...'" could add a service definition
+ to master.cf that conflicted with an already existing service
+ definition. It now replaces all existing service definitions
+ that match the service pattern 'name1/type1' or the service
+ name and type in 'name2 type2 ...' with a single service
+ definition 'name2 type2 ...'. Problem reported by SATOH Fumiyasu.
+ * Bugfix (defect introduced: Postfix 3.8) the posttls-finger
+ command could access uninitialized memory when reconnecting.
+ This also fixes a malformed warning message when a destination
+ contains ":service" information. Reported by Thomas Korbar.
+ * Bugfix (defect introduced: Postfix 3.2): the MySQL client could
+ return "not found" instead of "error" (for example, resulting
+ in a 5XX SMTP status instead of 4XX) during the time that all
+ MySQL server connections were turned down after error. Found
+ during code maintenance. File: global/dict_mysql.c. This was
+ already fixed in Postfix 3.4-3.7.
+
+-------------------------------------------------------------------
postfix.changes: same change
Old:
----
postfix-3.8.0.tar.gz
postfix-3.8.0.tar.gz.asc
New:
----
postfix-3.8.1.tar.gz
postfix-3.8.1.tar.gz.asc
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Other differences:
------------------
++++++ postfix-bdb.spec ++++++
--- /var/tmp/diff_new_pack.deqD9M/_old 2023-06-08 21:42:03.037810174 +0200
+++ /var/tmp/diff_new_pack.deqD9M/_new 2023-06-08 21:42:03.041810197 +0200
@@ -59,7 +59,7 @@
%endif
%bcond_without ldap
Name: postfix-bdb
-Version: 3.8.0
+Version: 3.8.1
Release: 0
Summary: A fast, secure, and flexible mailer
License: IPL-1.0 OR EPL-2.0
postfix.spec: same change
++++++ postfix-3.8.0.tar.gz -> postfix-3.8.1.tar.gz ++++++
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/HISTORY new/postfix-3.8.1/HISTORY
--- old/postfix-3.8.0/HISTORY 2023-04-16 23:17:01.000000000 +0200
+++ new/postfix-3.8.1/HISTORY 2023-06-05 21:08:34.000000000 +0200
@@ -27055,3 +27055,107 @@
Cleanup: in source-code comments, replaced redundant (and
sometimes incomplete) lookup table configuration info with
a reference to the corresponding *_table(5) manpage.
+
+20230418
+
+ Bugfix defect (introduced: Postfix 3.2): the MySQL client
+ could return "not found" instead of "error" (for example,
+ resulting in a 5XX SMTP status instead of 4XX) during the
+ time that all MySQL server connections were turned down
+ after error. Found during code maintenance. File:
+ global/dict_mysql.c.
+
+20230428
+
+ Bugfix (defect introduced: Postfix 1.0): the command "postconf
+ .. name=v1 .. name=v2 .." (multiple instances of the same
+ parameter name) created multiple name=value entries with
+ the same parameter name. It now logs a warning and skips
+ the earlier update. Found during code maintenance. File:
+ postconf/postconf_edit.c
+
+ Bugfix (defect introduced: Postfix 3.3): the command "postconf
+ -M name1/type1='name2 type2 ...'" died with a segmentation
+ violation when the request matched multiple master.cf
+ entries. The master.cf file was not damaged. Problem reported
+ by SATOH Fumiyasu. File: postconf/postconf_master.c.
+
+20230502
+
+ Bugfix (defect introduced: Postfix 2.11): the command
+ "postconf -M name1/type1='name2 type2 ...'" could add a
+ service definition to master.cf that conflicted with an
+ already existing service definition. It now replaces all
+ existing service definitions that match the service pattern
+ 'name1/type1' or the service name and type in 'name2 type2
+ ...' with a single service definition 'name2 type2 ...'.
+ Problem reported by SATOH Fumiyasu. File: postconf/postconf_edit.c.
+
+20230517
+
+ Bugfix (defect introduced: Postfix 3.8) the posttls-finger
+ command could access uninitialized memory when reconnecting.
+ This also fixes a warning message when a destination contains
+ ":service" information. Reported by Thomas Korbar. File:
+ posttls-finger/posttls-finger.c.
+
+20230519
+
+ Bitrot: preliminary support for OpenSSL configuration files,
+ primarily OpenSSL 1.1.1b and later. This introduces new
+ parameters "tls_config_file" and "tls_config_name", which
+ can be used to limit collateral damage from OS distributions
+ that crank up security to 11, increasing the number of
+ plaintext email deliveries. Details are in the postconf(5)
+ manpage under "tls_config_file" and "tls_config_name".
+ Viktor Dukhovni. Files: mantools/postlink, proto/postconf.proto,
+ global/mail_params.h, posttls-finger/posttls-finger.c,
+ smtp/smtp.c, smtp/smtp_proto.c, tls/tls_client.c, tls/tls.h,
+ tls/tls_misc.c, tls/tls_proxy_client_print.c,
+ tls/tls_proxy_client_scan.c, tls/tls_proxy.h, tls/tls_server.c,
+ tlsproxy/tlsproxy.c.
+
+20230523
+
+ Cleanup: use TLS_CLIENT_PARAMS to pass the OpensSSL 'init'
+ configurations. This information is independent from the
+ client or server TLS context, and therefore does not belong
+ in tls_*_init() or tls_*_start() calls. The tlsproxy(8)
+ server uses TLS_CLIENT_PARAMS to report differences between
+ its own global TLS settings, and those from its clients.
+ Files: posttls-finger/posttls-finger.c, smtp/smtp.c,
+ smtp/smtp_proto.c, tls/tls.h, tls/tls_proxy_client_misc.c,
+ tls/tls_proxy_client_print.c, tls/tls_proxy_client_scan.c,
+ tls/tls_proxy.h, tlsproxy/tlsproxy.c.
+
+20230524
+
+ Cleanup: reverted cosmetic-only changes to minimize the
+ patch footprint for OpenSSL INI file support; updated daemon
+ manpages with the new tls_config_file and tls_config_name
+ configuration parameters. Files: smtp/smtp.c, smtpd/smtpd.c,
+ tls/tls_client.c, tls/tls.h, tls/tls_server.c, tlsproxy/tlsproxy.c,
+
+20230529
+
+ Cleanup: made OpenSSL 'default' INI file support error
+ handling consistent with OpenSSL default behavior. Viktor
+ Dukhovni. Files: proto/postconf.proto, tls/tls_misc.c.
+
+20230602
+
+ Backwards compatibility for stable releases that originally
+ had no OpenSSL INI support. Skip the new OpenSSL INI support
+ code, unless the Postfix configuration actually specifies
+ non-default tls_config_xxx settings. File: tls/tls_misc.c.
+
+ Cleanup: added a multiple initialization guard in the
+ tls_library_init() function, and made an initialization
+ error sticky. File: tls/tls_misc.c.
+
+20230605
+
+ Security: new parameter smtpd_forbid_unauth_pipelining
+ (default: no) to disconnect remote SMTP clients that violate
+ RFC 2920 (or 5321) command pipelining constraints. Files:
+ global/mail_params.h, smtpd/smtpd.c, proto/postconf.proto.
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/RELEASE_NOTES
new/postfix-3.8.1/RELEASE_NOTES
--- old/postfix-3.8.0/RELEASE_NOTES 2023-04-12 15:11:13.000000000 +0200
+++ new/postfix-3.8.1/RELEASE_NOTES 2023-06-05 23:38:31.000000000 +0200
@@ -26,6 +26,23 @@
license of their choice. Those who are more comfortable with the
IPL can continue with that license.
+Major changes with Postfix 3.8.1
+================================
+
+Security: the Postfix SMTP server optionally disconnects remote
+SMTP clients that violate RFC 2920 (or 5321) command pipelining
+constraints. The server replies with "554 5.5.0 Error: SMTP protocol
+synchronization" and logs the unexpected remote SMTP client input.
+Specify "smtpd_forbid_unauth_pipelining = yes" to enable. This
+feature is enabled by default in Postfix 3.9 and later.
+
+Workaround to limit collateral damage from OS distributions that
+crank up security to 11, increasing the number of plaintext email
+deliveries. This introduces basic OpenSSL configuration file support,
+with two new parameters "tls_config_file" and "tls_config_name".
+Details are in the postconf(5) manpage under "tls_config_file" and
+"tls_config_name".
+
Major changes - documentation and code cleanup
----------------------------------------------
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/html/lmtp.8.html
new/postfix-3.8.1/html/lmtp.8.html
--- old/postfix-3.8.0/html/lmtp.8.html 2023-03-09 00:37:29.000000000 +0100
+++ new/postfix-3.8.1/html/lmtp.8.html 2023-06-04 23:19:50.000000000 +0200
@@ -715,6 +715,15 @@
(FFDHE) key exchange groups supported by the Postfix SMTP client
and server.
+ Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+
+ <b><a href="postconf.5.html#tls_config_file">tls_config_file</a>
(default)</b>
+ Optional configuration file with baseline OpenSSL settings.
+
+ <b><a href="postconf.5.html#tls_config_name">tls_config_name</a>
(empty)</b>
+ The application name passed by Postfix to OpenSSL library ini-
+ tialization functions.
+
<b>OBSOLETE STARTTLS CONTROLS</b>
The following configuration parameters exist for compatibility with
Postfix versions before 2.3. Support for these will be removed in a
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/html/postconf.5.html
new/postfix-3.8.1/html/postconf.5.html
--- old/postfix-3.8.0/html/postconf.5.html 2023-03-14 21:17:27.000000000
+0100
+++ new/postfix-3.8.1/html/postconf.5.html 2023-06-05 21:23:21.000000000
+0200
@@ -15603,6 +15603,22 @@
</DD>
+<DT><b><a
name="smtpd_forbid_unauth_pipelining">smtpd_forbid_unauth_pipelining</a>
+(default: Postfix ≥ 3.9: yes)</b></DT><DD>
+
+<p> Disconnect remote SMTP clients that violate <a
href="https://tools.ietf.org/html/rfc2920";>RFC 2920</a> (or 5321)
+command pipelining constraints. The server replies with "554 5.5.0
+Error: SMTP protocol synchronization" and logs the unexpected remote
+SMTP client input. Specify "<a
href="postconf.5.html#smtpd_forbid_unauth_pipelining">smtpd_forbid_unauth_pipelining</a>
= yes"
+to enable. This feature is enabled by default with Postfix ≥
+3.9. </p>
+
+<p> This feature is available in Postfix ≥ 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20. </p>
+
+
+</DD>
+
<DT><b><a name="smtpd_forbidden_commands">smtpd_forbidden_commands</a>
(default: CONNECT GET POST <a
href="regexp_table.5.html">regexp</a>:{{/^[^A-Z]/ Bogus}})</b></DT><DD>
@@ -19136,6 +19152,113 @@
</DD>
+
+<DT><b><a name="tls_config_file">tls_config_file</a>
+(default: default)</b></DT><DD>
+
+<p> Optional configuration file with baseline OpenSSL settings.
+OpenSSL loads any SSL settings found in the configuration file for
+the selected application name (see <a
href="postconf.5.html#tls_config_name">tls_config_name</a>) or else the
+built-in application name "openssl_conf" when no application name is
+specified, or no corresponding configuration section is present.
+</p>
+
+<p> With OpenSSL releases 1.1.1 and 1.1.1a, applications (including
+Postfix) can neither specify an alternative configuration file, nor
+avoid loading the default configuration file. </p>
+
+<p> With OpenSSL 1.1.1b or later, this parameter may be set to one of:
+</p>
+
+<dl>
+
+<dt> <b>default</b> (default) </dt> <dd> Load the system-wide
+"openssl.cnf" configuration file. </dd>
+
+<dt> <b>none</b> (recommended, OpenSSL 1.1.1b or later only) </dt>
+<dd> This setting disables loading of the system-wide "openssl.cnf"
+file. </dd>
+
+<dt> <b><i>/absolute-path</i></b> (OpenSSL 1.1.1b or later only) </dt>
+<dd> Load the configuration file specified by <i>/absolute-path</i>.
+With this setting it is an error for the file to not contain any
+settings for the selected <a
href="postconf.5.html#tls_config_name">tls_config_name</a>. There is no
fallback to
+the default "openssl_conf" name. </dd>
+
+</dl>
+
+<p> Failures in processing of the built-in default configuration file,
+are silently ignored. Any errors in loading a non-default configuration
+file are detected by Postfix, and cause TLS support to be disabled.
+</p>
+
+<p> The OpenSSL configuration file format is not documented here,
+beyond giving two examples. <p>
+
+<p> Example: Default settings for all applications. </p>
+
+<blockquote>
+<pre>
+# The name 'openssl_conf' is the default application name
+# The section name to the right of the '=' sign is arbitrary,
+# any name will do, so long as it refers to the desired section.
+#
+# The name 'system_default' selects the settings applied internally
+# by the SSL library as part of SSL object creation. Applications
+# can then apply any additional settings of their choice.
+#
+# In this example, TLS versions prior to 1.2 are disabled by default.
+#
+openssl_conf = system_wide_settings
+[system_wide_settings]
+ssl_conf = ssl_library_settings
+[ssl_library_settings]
+system_default = initial_ssl_settings
+[initial_ssl_settings]
+MinProtocol = TLSv1.2
+</pre>
+</blockquote>
+
+<p> Example: Custom settings for an application named "postfix". </p>
+
+<blockquote>
+<pre>
+# The mapping from an application name to the corresponding configuration
+# section must appear near the top of the file, (in what is sometimes called
+# the "default section") prior to the start of any explicitly named
+# "[sections]". The named sections can appear in any order and don't nest.
+#
+postfix = postfix_settings
+[postfix_settings]
+ssl_conf = postfix_ssl_settings
+[postfix_ssl_settings]
+system_default = baseline_postfix_settings
+[baseline_postfix_settings]
+MinProtocol = TLSv1
+</pre>
+</blockquote>
+
+<p> This feature is available in Postfix ≥ 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20. </p>
+
+
+</DD>
+
+<DT><b><a name="tls_config_name">tls_config_name</a>
+(default: empty)</b></DT><DD>
+
+<p> The application name passed by Postfix to OpenSSL library
+initialization functions. This name is used to select the desired
+configuration "section" in the OpenSSL configuration file specified
+via the <a href="postconf.5.html#tls_config_file">tls_config_file</a>
parameter. When empty, or when the
+selected name is not present in the configuration file, the default
+application name ("openssl_conf") is used as a fallback. </p>
+
+<p> This feature is available in Postfix ≥ 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20. </p>
+
+
+</DD>
<DT><b><a name="tls_daemon_random_bytes">tls_daemon_random_bytes</a>
(default: 32)</b></DT><DD>
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/html/smtp.8.html
new/postfix-3.8.1/html/smtp.8.html
--- old/postfix-3.8.0/html/smtp.8.html 2023-03-09 00:37:29.000000000 +0100
+++ new/postfix-3.8.1/html/smtp.8.html 2023-06-04 23:19:50.000000000 +0200
@@ -715,6 +715,15 @@
(FFDHE) key exchange groups supported by the Postfix SMTP client
and server.
+ Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+
+ <b><a href="postconf.5.html#tls_config_file">tls_config_file</a>
(default)</b>
+ Optional configuration file with baseline OpenSSL settings.
+
+ <b><a href="postconf.5.html#tls_config_name">tls_config_name</a>
(empty)</b>
+ The application name passed by Postfix to OpenSSL library ini-
+ tialization functions.
+
<b>OBSOLETE STARTTLS CONTROLS</b>
The following configuration parameters exist for compatibility with
Postfix versions before 2.3. Support for these will be removed in a
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/html/smtpd.8.html
new/postfix-3.8.1/html/smtpd.8.html
--- old/postfix-3.8.0/html/smtpd.8.html 2023-03-14 21:17:28.000000000 +0100
+++ new/postfix-3.8.1/html/smtpd.8.html 2023-06-05 21:43:34.000000000 +0200
@@ -639,6 +639,15 @@
(FFDHE) key exchange groups supported by the Postfix SMTP client
and server.
+ Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+
+ <b><a href="postconf.5.html#tls_config_file">tls_config_file</a>
(default)</b>
+ Optional configuration file with baseline OpenSSL settings.
+
+ <b><a href="postconf.5.html#tls_config_name">tls_config_name</a>
(empty)</b>
+ The application name passed by Postfix to OpenSSL library ini-
+ tialization functions.
+
<b>OBSOLETE STARTTLS CONTROLS</b>
The following configuration parameters exist for compatibility with
Postfix versions before 2.3. Support for these will be removed in a
@@ -972,6 +981,12 @@
Aggregate smtpd_client_*_count and smtpd_client_*_rate statis-
tics by IPv6 network blocks with the specified network prefix.
+ Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+
+ <b><a
href="postconf.5.html#smtpd_forbid_unauth_pipelining">smtpd_forbid_unauth_pipelining</a>
(Postfix</b> ><b>= 3.9: yes)</b>
+ Disconnect remote SMTP clients that violate <a
href="https://tools.ietf.org/html/rfc2920";>RFC 2920</a> (or 5321)
+ command pipelining constraints.
+
<b>TARPIT CONTROLS</b>
When a remote SMTP client makes errors, the Postfix SMTP server can
insert delays before responding. This can help to slow down run-away
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/html/tlsproxy.8.html
new/postfix-3.8.1/html/tlsproxy.8.html
--- old/postfix-3.8.0/html/tlsproxy.8.html 2023-03-09 00:37:29.000000000
+0100
+++ new/postfix-3.8.1/html/tlsproxy.8.html 2023-06-04 23:25:56.000000000
+0200
@@ -160,6 +160,15 @@
(FFDHE) key exchange groups supported by the Postfix SMTP client
and server.
+ Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+
+ <b><a href="postconf.5.html#tls_config_file">tls_config_file</a>
(default)</b>
+ Optional configuration file with baseline OpenSSL settings.
+
+ <b><a href="postconf.5.html#tls_config_name">tls_config_name</a>
(empty)</b>
+ The application name passed by Postfix to OpenSSL library ini-
+ tialization functions.
+
<b>STARTTLS SERVER CONTROLS</b>
These settings are clones of Postfix SMTP server settings. They allow
<a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> to load the same
certificate and private key information as
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/man/man5/postconf.5
new/postfix-3.8.1/man/man5/postconf.5
--- old/postfix-3.8.0/man/man5/postconf.5 2023-03-14 21:17:27.000000000
+0100
+++ new/postfix-3.8.1/man/man5/postconf.5 2023-06-05 21:23:21.000000000
+0200
@@ -10723,6 +10723,16 @@
parameter $name expansion.
.PP
This feature is available in Postfix 2.0 and later.
+.SH smtpd_forbid_unauth_pipelining (default: Postfix >= 3.9: yes)
+Disconnect remote SMTP clients that violate RFC 2920 (or 5321)
+command pipelining constraints. The server replies with "554 5.5.0
+Error: SMTP protocol synchronization" and logs the unexpected remote
+SMTP client input. Specify "smtpd_forbid_unauth_pipelining = yes"
+to enable. This feature is enabled by default with Postfix >=
+3.9.
+.PP
+This feature is available in Postfix >= 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20.
.SH smtpd_forbidden_commands (default: CONNECT GET POST regexp:{{/^[^A\-Z]/
Bogus}})
List of commands that cause the Postfix SMTP server to immediately
terminate the session with a 221 code. This can be used to disconnect
@@ -13539,6 +13549,104 @@
2.7.2 and later versions. Specify "tls_append_default_CA = yes" for
backwards compatibility, to avoid breaking certificate verification
with sites that don't use permit_tls_all_clientcerts.
+.SH tls_config_file (default: default)
+Optional configuration file with baseline OpenSSL settings.
+OpenSSL loads any SSL settings found in the configuration file for
+the selected application name (see tls_config_name) or else the
+built\-in application name "openssl_conf" when no application name is
+specified, or no corresponding configuration section is present.
+.PP
+With OpenSSL releases 1.1.1 and 1.1.1a, applications (including
+Postfix) can neither specify an alternative configuration file, nor
+avoid loading the default configuration file.
+.PP
+With OpenSSL 1.1.1b or later, this parameter may be set to one of:
+.IP "\fBdefault\fR (default)"
+Load the system\-wide
+"openssl.cnf" configuration file.
+.br
+.IP "\fBnone\fR (recommended, OpenSSL 1.1.1b or later only)"
+This setting disables loading of the system\-wide "openssl.cnf"
+file.
+.br
+.IP "\fB\fI/absolute\-path\fR\fR (OpenSSL 1.1.1b or later only)"
+Load the configuration file specified by \fI/absolute\-path\fR.
+With this setting it is an error for the file to not contain any
+settings for the selected tls_config_name. There is no fallback to
+the default "openssl_conf" name.
+.br
+.br
+.PP
+Failures in processing of the built\-in default configuration file,
+are silently ignored. Any errors in loading a non\-default configuration
+file are detected by Postfix, and cause TLS support to be disabled.
+.PP
+The OpenSSL configuration file format is not documented here,
+beyond giving two examples.
+.PP
+Example: Default settings for all applications.
+.sp
+.in +4
+.nf
+.na
+.ft C
+# The name 'openssl_conf' is the default application name
+# The section name to the right of the '=' sign is arbitrary,
+# any name will do, so long as it refers to the desired section.
+#
+# The name 'system_default' selects the settings applied internally
+# by the SSL library as part of SSL object creation. Applications
+# can then apply any additional settings of their choice.
+#
+# In this example, TLS versions prior to 1.2 are disabled by default.
+#
+openssl_conf = system_wide_settings
+[system_wide_settings]
+ssl_conf = ssl_library_settings
+[ssl_library_settings]
+system_default = initial_ssl_settings
+[initial_ssl_settings]
+MinProtocol = TLSv1.2
+.fi
+.ad
+.ft R
+.in -4
+.PP
+Example: Custom settings for an application named "postfix".
+.sp
+.in +4
+.nf
+.na
+.ft C
+# The mapping from an application name to the corresponding configuration
+# section must appear near the top of the file, (in what is sometimes called
+# the "default section") prior to the start of any explicitly named
+# "[sections]". The named sections can appear in any order and don't nest.
+#
+postfix = postfix_settings
+[postfix_settings]
+ssl_conf = postfix_ssl_settings
+[postfix_ssl_settings]
+system_default = baseline_postfix_settings
+[baseline_postfix_settings]
+MinProtocol = TLSv1
+.fi
+.ad
+.ft R
+.in -4
+.PP
+This feature is available in Postfix >= 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20.
+.SH tls_config_name (default: empty)
+The application name passed by Postfix to OpenSSL library
+initialization functions. This name is used to select the desired
+configuration "section" in the OpenSSL configuration file specified
+via the tls_config_file parameter. When empty, or when the
+selected name is not present in the configuration file, the default
+application name ("openssl_conf") is used as a fallback.
+.PP
+This feature is available in Postfix >= 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20.
.SH tls_daemon_random_bytes (default: 32)
The number of pseudo\-random bytes that an \fBsmtp\fR(8) or \fBsmtpd\fR(8)
process requests from the \fBtlsmgr\fR(8) server in order to seed its
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/man/man8/smtp.8
new/postfix-3.8.1/man/man8/smtp.8
--- old/postfix-3.8.0/man/man8/smtp.8 2023-03-03 19:53:42.000000000 +0100
+++ new/postfix-3.8.1/man/man8/smtp.8 2023-06-04 23:12:22.000000000 +0200
@@ -640,6 +640,13 @@
The prioritized list of finite\-field Diffie\-Hellman ephemeral
(FFDHE) key exchange groups supported by the Postfix SMTP client and
server.
+.PP
+Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+.IP "\fBtls_config_file (default)\fR"
+Optional configuration file with baseline OpenSSL settings.
+.IP "\fBtls_config_name (empty)\fR"
+The application name passed by Postfix to OpenSSL library
+initialization functions.
.SH "OBSOLETE STARTTLS CONTROLS"
.na
.nf
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/man/man8/smtpd.8
new/postfix-3.8.1/man/man8/smtpd.8
--- old/postfix-3.8.0/man/man8/smtpd.8 2023-03-14 21:17:27.000000000 +0100
+++ new/postfix-3.8.1/man/man8/smtpd.8 2023-06-05 21:22:44.000000000 +0200
@@ -564,6 +564,13 @@
The prioritized list of finite\-field Diffie\-Hellman ephemeral
(FFDHE) key exchange groups supported by the Postfix SMTP client and
server.
+.PP
+Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+.IP "\fBtls_config_file (default)\fR"
+Optional configuration file with baseline OpenSSL settings.
+.IP "\fBtls_config_name (empty)\fR"
+The application name passed by Postfix to OpenSSL library
+initialization functions.
.SH "OBSOLETE STARTTLS CONTROLS"
.na
.nf
@@ -849,6 +856,11 @@
.IP "\fBsmtpd_client_ipv6_prefix_length (84)\fR"
Aggregate smtpd_client_*_count and smtpd_client_*_rate statistics
by IPv6 network blocks with the specified network prefix.
+.PP
+Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+.IP "\fBsmtpd_forbid_unauth_pipelining (Postfix >= 3.9: yes)\fR"
+Disconnect remote SMTP clients that violate RFC 2920 (or 5321)
+command pipelining constraints.
.SH "TARPIT CONTROLS"
.na
.nf
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/man/man8/tlsproxy.8
new/postfix-3.8.1/man/man8/tlsproxy.8
--- old/postfix-3.8.0/man/man8/tlsproxy.8 2023-03-03 19:53:42.000000000
+0100
+++ new/postfix-3.8.1/man/man8/tlsproxy.8 2023-06-04 23:12:22.000000000
+0200
@@ -158,6 +158,13 @@
The prioritized list of finite\-field Diffie\-Hellman ephemeral
(FFDHE) key exchange groups supported by the Postfix SMTP client and
server.
+.PP
+Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+.IP "\fBtls_config_file (default)\fR"
+Optional configuration file with baseline OpenSSL settings.
+.IP "\fBtls_config_name (empty)\fR"
+The application name passed by Postfix to OpenSSL library
+initialization functions.
.SH "STARTTLS SERVER CONTROLS"
.na
.nf
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/mantools/postlink
new/postfix-3.8.1/mantools/postlink
--- old/postfix-3.8.0/mantools/postlink 2023-03-12 23:53:55.000000000 +0100
+++ new/postfix-3.8.1/mantools/postlink 2023-06-05 21:06:51.000000000 +0200
@@ -557,6 +557,7 @@
s;\bsmtpd_etrn_restrictions\b;<a
href="postconf.5.html#smtpd_etrn_restrictions">$&</a>;g;
s;\bsmtpd_expansion_filter\b;<a
href="postconf.5.html#smtpd_expansion_filter">$&</a>;g;
s;\bsmtpd_for[-</bB>]*\n*[ <bB>]*bidden_commands\b;<a
href="postconf.5.html#smtpd_forbidden_commands">$&</a>;g;
+ s;\bsmtpd_for[-</bB>]*\n*[ <bB>]*bid_unauth_pipelining\b;<a
href="postconf.5.html#smtpd_forbid_unauth_pipelining">$&</a>;g;
s;\bsmtpd_hard_error_limit\b;<a
href="postconf.5.html#smtpd_hard_error_limit">$&</a>;g;
s;\bsmtpd_helo_required\b;<a
href="postconf.5.html#smtpd_helo_required">$&</a>;g;
s;\bsmtpd_helo_restrictions\b;<a
href="postconf.5.html#smtpd_helo_restrictions">$&</a>;g;
@@ -782,6 +783,8 @@
s;\btls_session_ticket_cipher\b;<a
href="postconf.5.html#tls_session_ticket_cipher">$&</a>;g;
s;\btls_server_sni_maps\b;<a
href="postconf.5.html#tls_server_sni_maps">$&</a>;g;
s;\btls_ssl_options\b;<a href="postconf.5.html#tls_ssl_options">$&</a>;g;
+ s;\btls_config_name\b;<a href="postconf.5.html#tls_config_name">$&</a>;g;
+ s;\btls_config_file\b;<a href="postconf.5.html#tls_config_file">$&</a>;g;
s;\btls_dane_digest_agility\b;<a
href="postconf.5.html#tls_dane_digest_agility">$&</a>;g;
s;\btls_dane_trust_anchor_digest_enable\b;<a
href="postconf.5.html#tls_dane_trust_anchor_digest_enable">$&</a>;g;
s;\btls_fast_shutdown_enable\b;<a
href="postconf.5.html#tls_fast_shutdown_enable">$&</a>;g;
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/proto/postconf.proto
new/postfix-3.8.1/proto/postconf.proto
--- old/postfix-3.8.0/proto/postconf.proto 2023-03-14 21:16:56.000000000
+0100
+++ new/postfix-3.8.1/proto/postconf.proto 2023-06-05 21:12:17.000000000
+0200
@@ -18616,3 +18616,114 @@
aggregation is enabled for IPv6. </p>
<p> This feature is available in Postfix 3.8 and later. </p>
+
+%PARAM tls_config_name
+
+<p> The application name passed by Postfix to OpenSSL library
+initialization functions. This name is used to select the desired
+configuration "section" in the OpenSSL configuration file specified
+via the tls_config_file parameter. When empty, or when the
+selected name is not present in the configuration file, the default
+application name ("openssl_conf") is used as a fallback. </p>
+
+<p> This feature is available in Postfix ≥ 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20. </p>
+
+%PARAM tls_config_file default
+
+<p> Optional configuration file with baseline OpenSSL settings.
+OpenSSL loads any SSL settings found in the configuration file for
+the selected application name (see tls_config_name) or else the
+built-in application name "openssl_conf" when no application name is
+specified, or no corresponding configuration section is present.
+</p>
+
+<p> With OpenSSL releases 1.1.1 and 1.1.1a, applications (including
+Postfix) can neither specify an alternative configuration file, nor
+avoid loading the default configuration file. </p>
+
+<p> With OpenSSL 1.1.1b or later, this parameter may be set to one of:
+</p>
+
+<dl>
+
+<dt> <b>default</b> (default) </dt> <dd> Load the system-wide
+"openssl.cnf" configuration file. </dd>
+
+<dt> <b>none</b> (recommended, OpenSSL 1.1.1b or later only) </dt>
+<dd> This setting disables loading of the system-wide "openssl.cnf"
+file. </dd>
+
+<dt> <b><i>/absolute-path</i></b> (OpenSSL 1.1.1b or later only) </dt>
+<dd> Load the configuration file specified by <i>/absolute-path</i>.
+With this setting it is an error for the file to not contain any
+settings for the selected tls_config_name. There is no fallback to
+the default "openssl_conf" name. </dd>
+
+</dl>
+
+<p> Failures in processing of the built-in default configuration file,
+are silently ignored. Any errors in loading a non-default configuration
+file are detected by Postfix, and cause TLS support to be disabled.
+</p>
+
+<p> The OpenSSL configuration file format is not documented here,
+beyond giving two examples. <p>
+
+<p> Example: Default settings for all applications. </p>
+
+<blockquote>
+<pre>
+# The name 'openssl_conf' is the default application name
+# The section name to the right of the '=' sign is arbitrary,
+# any name will do, so long as it refers to the desired section.
+#
+# The name 'system_default' selects the settings applied internally
+# by the SSL library as part of SSL object creation. Applications
+# can then apply any additional settings of their choice.
+#
+# In this example, TLS versions prior to 1.2 are disabled by default.
+#
+openssl_conf = system_wide_settings
+[system_wide_settings]
+ssl_conf = ssl_library_settings
+[ssl_library_settings]
+system_default = initial_ssl_settings
+[initial_ssl_settings]
+MinProtocol = TLSv1.2
+</pre>
+</blockquote>
+
+<p> Example: Custom settings for an application named "postfix". </p>
+
+<blockquote>
+<pre>
+# The mapping from an application name to the corresponding configuration
+# section must appear near the top of the file, (in what is sometimes called
+# the "default section") prior to the start of any explicitly named
+# "[sections]". The named sections can appear in any order and don't nest.
+#
+postfix = postfix_settings
+[postfix_settings]
+ssl_conf = postfix_ssl_settings
+[postfix_ssl_settings]
+system_default = baseline_postfix_settings
+[baseline_postfix_settings]
+MinProtocol = TLSv1
+</pre>
+</blockquote>
+
+<p> This feature is available in Postfix ≥ 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20. </p>
+
+%PARAM smtpd_forbid_unauth_pipelining Postfix ≥ 3.9: yes
+
+<p> Disconnect remote SMTP clients that violate RFC 2920 (or 5321)
+command pipelining constraints. The server replies with "554 5.5.0
+Error: SMTP protocol synchronization" and logs the unexpected remote
+SMTP client input. Specify "smtpd_forbid_unauth_pipelining = yes"
+to enable. This feature is enabled by default with Postfix ≥
+3.9. </p>
+
+<p> This feature is available in Postfix ≥ 3.9, 3.8.1, 3.7.6,
+3.6.10, and 3.5.20. </p>
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/global/dict_mysql.c
new/postfix-3.8.1/src/global/dict_mysql.c
--- old/postfix-3.8.0/src/global/dict_mysql.c 2023-04-16 23:17:01.000000000
+0200
+++ new/postfix-3.8.1/src/global/dict_mysql.c 2023-04-19 00:47:13.000000000
+0200
@@ -439,7 +439,7 @@
{
HOST *host;
MYSQL_RES *first_result = 0;
- int query_error;
+ int query_error = 1;
/*
* Helper to avoid spamming the log with warnings.
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/global/mail_params.h
new/postfix-3.8.1/src/global/mail_params.h
--- old/postfix-3.8.0/src/global/mail_params.h 2023-03-14 21:15:35.000000000
+0100
+++ new/postfix-3.8.1/src/global/mail_params.h 2023-06-05 23:44:19.000000000
+0200
@@ -2436,6 +2436,10 @@
#define DEF_SMTPD_PEERNAME_LOOKUP 1
extern bool var_smtpd_peername_lookup;
+#define VAR_SMTPD_FORBID_UNAUTH_PIPE "smtpd_forbid_unauth_pipelining"
+#define DEF_SMTPD_FORBID_UNAUTH_PIPE 0
+extern bool var_smtpd_forbid_unauth_pipe;
+
/*
* Heuristic to reject unknown local recipients at the SMTP port.
*/
@@ -3330,9 +3334,19 @@
extern bool var_smtp_cname_overr;
/*
- * TLS cipherlists
+ * TLS library settings
+ */
+#define VAR_TLS_CNF_FILE "tls_config_file"
+#define DEF_TLS_CNF_FILE "default"
+extern char *var_tls_cnf_file;
+
+#define VAR_TLS_CNF_NAME "tls_config_name"
+#define DEF_TLS_CNF_NAME ""
+extern char *var_tls_cnf_name;
+
+ /*
+ * Deprecated and unused cipher, key exchange and public key algorithms
*/
- /* Deprecated and unused cipher, key exchange and public key algorithms */
#define TLS_EXCL_CIPHS ":!SEED:!IDEA:!3DES:!RC2:!RC4:!RC5"
#define TLS_EXCL_KEXCH ":!kDH:!kECDH"
#define TLS_EXCL_PKEYS ":!aDSS"
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/global/mail_version.h
new/postfix-3.8.1/src/global/mail_version.h
--- old/postfix-3.8.0/src/global/mail_version.h 2023-04-16 23:34:01.000000000
+0200
+++ new/postfix-3.8.1/src/global/mail_version.h 2023-06-05 21:14:35.000000000
+0200
@@ -20,8 +20,8 @@
* Patches change both the patchlevel and the release date. Snapshots have no
* patchlevel; they change the release date only.
*/
-#define MAIL_RELEASE_DATE "20230416"
-#define MAIL_VERSION_NUMBER "3.8.0"
+#define MAIL_RELEASE_DATE "20230605"
+#define MAIL_VERSION_NUMBER "3.8.1"
#ifdef SNAPSHOT
#define MAIL_VERSION_DATE "-" MAIL_RELEASE_DATE
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/postconf/postconf_edit.c
new/postfix-3.8.1/src/postconf/postconf_edit.c
--- old/postfix-3.8.0/src/postconf/postconf_edit.c 2023-04-16
23:17:01.000000000 +0200
+++ new/postfix-3.8.1/src/postconf/postconf_edit.c 2023-05-02
21:26:20.000000000 +0200
@@ -192,6 +192,11 @@
} else {
msg_panic("pcf_edit_main: unknown mode %d", mode);
}
+ if ((cvalue = htable_find(table, pattern)) != 0) {
+ msg_warn("ignoring earlier request: '%s = %s'",
+ pattern, cvalue->value);
+ htable_delete(table, pattern, myfree);
+ }
cvalue = (struct cvalue *) mymalloc(sizeof(*cvalue));
cvalue->value = edit_value;
cvalue->found = 0;
@@ -456,8 +461,38 @@
/*
* Match each service pattern.
+ *
+ * Additional care is needed when a request adds or replaces an
+ * entire service definition, instead of a specific field or
+ * parameter. Given a command "postconf -M name1/type1='name2
+ * type2 ...'", where name1 and name2 may differ, and likewise
+ * for type1 and type2:
+ *
+ * - First, if an existing service definition a) matches the service
+ * pattern 'name1/type1', or b) matches the name and type in the
+ * new service definition 'name2 type2 ...', remove the service
+ * definition.
+ *
+ * - Then, after an a) or b) type match, add a new service
+ * definition for 'name2 type2 ...', but only after the first
+ * match.
+ *
+ * - Finally, if a request had no a) or b) type match for any
+ * master.cf service definition, add a new service definition for
+ * 'name2 type2 ...'.
*/
for (req = edit_reqs; req < edit_reqs + num_reqs; req++) {
+ PCF_MASTER_ENT *tentative_entry = 0;
+ int use_tentative_entry = 0;
+
+ /* Additional care for whole service definition requests. */
+ if ((mode & PCF_MASTER_ENTRY) && (mode & PCF_EDIT_CONF)) {
+ tentative_entry = (PCF_MASTER_ENT *)
+ mymalloc(sizeof(*tentative_entry));
+ if ((err = pcf_parse_master_entry(tentative_entry,
+ req->edit_value)) != 0)
+ msg_fatal("%s: \"%s\"", err, req->raw_text);
+ }
if (PCF_MATCH_SERVICE_PATTERN(req->service_pattern,
service_name,
service_type)) {
@@ -503,18 +538,30 @@
* Replace entire master.cf entry.
*/
case PCF_MASTER_ENTRY:
- if (new_entry != 0)
- pcf_free_master_entry(new_entry);
- new_entry = (PCF_MASTER_ENT *)
- mymalloc(sizeof(*new_entry));
- if ((err = pcf_parse_master_entry(new_entry,
- req->edit_value)) != 0)
- msg_fatal("%s: \"%s\"", err, req->raw_text);
+ if (req->match_count == 1)
+ use_tentative_entry = 1;
break;
default:
msg_panic("%s: unknown edit mode %d", myname, mode);
}
}
+ } else if (tentative_entry != 0
+ && PCF_MATCH_SERVICE_PATTERN(tentative_entry->argv,
+ service_name,
+ service_type)) {
+ service_name_type_matched = 1; /* Sticky flag */
+ req->match_count += 1;
+ if (req->match_count == 1)
+ use_tentative_entry = 1;
+ }
+ if (tentative_entry != 0) {
+ if (use_tentative_entry) {
+ if (new_entry != 0)
+ pcf_free_master_entry(new_entry);
+ new_entry = tentative_entry;
+ } else {
+ pcf_free_master_entry(tentative_entry);
+ }
}
}
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/postconf/postconf_master.c
new/postfix-3.8.1/src/postconf/postconf_master.c
--- old/postfix-3.8.0/src/postconf/postconf_master.c 2023-04-16
23:17:01.000000000 +0200
+++ new/postfix-3.8.1/src/postconf/postconf_master.c 2023-05-01
01:49:02.000000000 +0200
@@ -156,6 +156,7 @@
#include <readlline.h>
#include <stringops.h>
#include <split_at.h>
+#include <dict_ht.h>
/* Global library. */
@@ -395,12 +396,12 @@
concatenate("ro", PCF_NAMESP_SEP_STR, masterp->name_space, (char *) 0);
masterp->argv = argv;
masterp->valid_names = 0;
+ masterp->ro_params = dict_ht_open(ro_name_space, O_CREAT | O_RDWR, 0);
process_name = basename(argv->argv[PCF_MASTER_FLD_CMD]);
- dict_update(ro_name_space, VAR_PROCNAME, process_name);
- dict_update(ro_name_space, VAR_SERVNAME,
- strcmp(process_name, argv->argv[0]) != 0 ?
- argv->argv[0] : process_name);
- masterp->ro_params = dict_handle(ro_name_space);
+ dict_put(masterp->ro_params, VAR_PROCNAME, process_name);
+ dict_put(masterp->ro_params, VAR_SERVNAME,
+ strcmp(process_name, argv->argv[0]) != 0 ?
+ argv->argv[0] : process_name);
myfree(ro_name_space);
masterp->all_params = 0;
return (0);
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/posttls-finger/posttls-finger.c
new/postfix-3.8.1/src/posttls-finger/posttls-finger.c
--- old/postfix-3.8.0/src/posttls-finger/posttls-finger.c 2023-04-16
23:17:01.000000000 +0200
+++ new/postfix-3.8.1/src/posttls-finger/posttls-finger.c 2023-05-16
23:55:54.000000000 +0200
@@ -1590,12 +1590,13 @@
static void connect_remote(STATE *state, char *dest)
{
DNS_RR *addr;
- char *buf;
- char *domain;
- char *service;
/* When reconnecting use IP address of previous session */
if (state->addr == 0) {
+ char *buf;
+ char *domain;
+ char *service;
+
buf = parse_destination(dest, state->smtp ? "smtp" : "24",
&domain, &service, &state->port);
if (!state->nexthop)
@@ -1622,8 +1623,8 @@
if (level == TLS_LEV_INVALID
|| (state->stream = connect_addr(state, addr)) == 0) {
- msg_info("Failed to establish session to %s:%s via %s:%u: %s",
- dest, service, HNAME(addr), addr->port,
+ msg_info("Failed to establish session to %s via %s:%u: %s",
+ dest, HNAME(addr), addr->port,
vstring_str(state->why->reason));
continue;
}
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/smtp/smtp.c
new/postfix-3.8.1/src/smtp/smtp.c
--- old/postfix-3.8.0/src/smtp/smtp.c 2023-03-03 19:53:42.000000000 +0100
+++ new/postfix-3.8.1/src/smtp/smtp.c 2023-06-04 22:58:32.000000000 +0200
@@ -606,6 +606,13 @@
/* The prioritized list of finite-field Diffie-Hellman ephemeral
/* (FFDHE) key exchange groups supported by the Postfix SMTP client and
/* server.
+/* .PP
+/* Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+/* .IP "\fBtls_config_file (default)\fR"
+/* Optional configuration file with baseline OpenSSL settings.
+/* .IP "\fBtls_config_name (empty)\fR"
+/* The application name passed by Postfix to OpenSSL library
+/* initialization functions.
/* OBSOLETE STARTTLS CONTROLS
/* .ad
/* .fi
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/smtpd/smtpd.c
new/postfix-3.8.1/src/smtpd/smtpd.c
--- old/postfix-3.8.0/src/smtpd/smtpd.c 2023-03-14 21:17:27.000000000 +0100
+++ new/postfix-3.8.1/src/smtpd/smtpd.c 2023-06-05 21:06:51.000000000 +0200
@@ -530,6 +530,13 @@
/* The prioritized list of finite-field Diffie-Hellman ephemeral
/* (FFDHE) key exchange groups supported by the Postfix SMTP client and
/* server.
+/* .PP
+/* Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+/* .IP "\fBtls_config_file (default)\fR"
+/* Optional configuration file with baseline OpenSSL settings.
+/* .IP "\fBtls_config_name (empty)\fR"
+/* The application name passed by Postfix to OpenSSL library
+/* initialization functions.
/* OBSOLETE STARTTLS CONTROLS
/* .ad
/* .fi
@@ -803,6 +810,11 @@
/* .IP "\fBsmtpd_client_ipv6_prefix_length (84)\fR"
/* Aggregate smtpd_client_*_count and smtpd_client_*_rate statistics
/* by IPv6 network blocks with the specified network prefix.
+/* .PP
+/* Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+/* .IP "\fBsmtpd_forbid_unauth_pipelining (Postfix >= 3.9: yes)\fR"
+/* Disconnect remote SMTP clients that violate RFC 2920 (or 5321)
+/* command pipelining constraints.
/* TARPIT CONTROLS
/* .ad
/* .fi
@@ -1491,6 +1503,7 @@
char *var_milt_unk_macros;
char *var_milt_macro_deflts;
bool var_smtpd_client_port_log;
+bool var_smtpd_forbid_unauth_pipe;
char *var_stress;
char *var_reject_tmpf_act;
@@ -5440,6 +5453,32 @@
static STRING_LIST *smtpd_noop_cmds;
static STRING_LIST *smtpd_forbid_cmds;
+/* smtpd_flag_ill_pipelining - flag pipelining protocol violation */
+
+static int smtpd_flag_ill_pipelining(SMTPD_STATE *state)
+{
+
+ /*
+ * This code will not return after I/O error, timeout, or EOF. VSTREAM
+ * exceptions must be enabled in advance with smtp_stream_setup().
+ */
+ if (vstream_peek(state->client) == 0
+ && peekfd(vstream_fileno(state->client)) > 0)
+ (void) vstream_ungetc(state->client, smtp_fgetc(state->client));
+ if (vstream_peek(state->client) > 0) {
+ if (state->expand_buf == 0)
+ state->expand_buf = vstring_alloc(100);
+ escape(state->expand_buf, vstream_peek_data(state->client),
+ vstream_peek(state->client) < 100 ?
+ vstream_peek(state->client) : 100);
+ msg_info("improper command pipelining after %s from %s: %s",
+ state->where, state->namaddr, STR(state->expand_buf));
+ state->flags |= SMTPD_FLAG_ILL_PIPELINING;
+ return (1);
+ }
+ return (0);
+}
+
/* smtpd_proto - talk the SMTP protocol */
static void smtpd_proto(SMTPD_STATE *state)
@@ -5582,6 +5621,21 @@
#endif
/*
+ * If the client spoke before the server sends the initial greeting,
+ * raise a flag and log the content of the protocol violation. This
+ * check MUST NOT apply to TLS wrappermode connections.
+ */
+ if (SMTPD_STAND_ALONE(state) == 0
+ && vstream_context(state->client) == 0 /* not postscreen */
+ && (state->flags & SMTPD_FLAG_ILL_PIPELINING) == 0
+ && smtpd_flag_ill_pipelining(state)
+ && var_smtpd_forbid_unauth_pipe) {
+ smtpd_chat_reply(state,
+ "554 5.5.0 Error: SMTP protocol synchronization");
+ break;
+ }
+
+ /*
* XXX The client connection count/rate control must be consistent in
* its use of client address information in connect and disconnect
* events. For now we exclude xclient authorized hosts from
@@ -5817,16 +5871,11 @@
&& (strcasecmp(state->protocol, MAIL_PROTO_ESMTP) != 0
|| (cmdp->flags & SMTPD_CMD_FLAG_LAST))
&& (state->flags & SMTPD_FLAG_ILL_PIPELINING) == 0
- && (vstream_peek(state->client) > 0
- || peekfd(vstream_fileno(state->client)) > 0)) {
- if (state->expand_buf == 0)
- state->expand_buf = vstring_alloc(100);
- escape(state->expand_buf, vstream_peek_data(state->client),
- vstream_peek(state->client) < 100 ?
- vstream_peek(state->client) : 100);
- msg_info("improper command pipelining after %s from %s: %s",
- cmdp->name, state->namaddr, STR(state->expand_buf));
- state->flags |= SMTPD_FLAG_ILL_PIPELINING;
+ && smtpd_flag_ill_pipelining(state)
+ && var_smtpd_forbid_unauth_pipe) {
+ smtpd_chat_reply(state,
+ "554 5.5.0 Error: SMTP protocol synchronization");
+ break;
}
if (cmdp->action(state, argc, argv) != 0)
state->error_count++;
@@ -6497,6 +6546,7 @@
VAR_SMTPD_PEERNAME_LOOKUP, DEF_SMTPD_PEERNAME_LOOKUP,
&var_smtpd_peername_lookup,
VAR_SMTPD_DELAY_OPEN, DEF_SMTPD_DELAY_OPEN, &var_smtpd_delay_open,
VAR_SMTPD_CLIENT_PORT_LOG, DEF_SMTPD_CLIENT_PORT_LOG,
&var_smtpd_client_port_log,
+ VAR_SMTPD_FORBID_UNAUTH_PIPE, DEF_SMTPD_FORBID_UNAUTH_PIPE,
&var_smtpd_forbid_unauth_pipe,
0,
};
static const CONFIG_NBOOL_TABLE nbool_table[] = {
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tls/tls.h
new/postfix-3.8.1/src/tls/tls.h
--- old/postfix-3.8.0/src/tls/tls.h 2023-01-21 22:00:03.000000000 +0100
+++ new/postfix-3.8.1/src/tls/tls.h 2023-06-04 22:58:32.000000000 +0200
@@ -77,6 +77,7 @@
#include <openssl/evp.h> /* New OpenSSL 3.0 EVP_PKEY APIs */
#include <openssl/opensslv.h> /* OPENSSL_VERSION_NUMBER */
#include <openssl/ssl.h>
+#include <openssl/conf.h>
/* Appease indent(1) */
#define x509_stack_t STACK_OF(X509)
@@ -322,6 +323,7 @@
* tls_misc.c
*/
extern void tls_param_init(void);
+extern int tls_library_init(void);
/*
* Protocol selection.
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tls/tls_client.c
new/postfix-3.8.1/src/tls/tls_client.c
--- old/postfix-3.8.0/src/tls/tls_client.c 2023-01-21 22:00:03.000000000
+0100
+++ new/postfix-3.8.1/src/tls/tls_client.c 2023-06-04 22:58:32.000000000
+0200
@@ -641,6 +641,13 @@
tls_check_version();
/*
+ * Initialize the OpenSSL library, possibly loading its configuration
+ * file.
+ */
+ if (tls_library_init() == 0)
+ return (0);
+
+ /*
* Create an application data index for SSL objects, so that we can
* attach TLScontext information; this information is needed inside
* tls_verify_certificate_callback().
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tls/tls_misc.c
new/postfix-3.8.1/src/tls/tls_misc.c
--- old/postfix-3.8.0/src/tls/tls_misc.c 2023-03-03 18:57:50.000000000
+0100
+++ new/postfix-3.8.1/src/tls/tls_misc.c 2023-06-04 23:02:41.000000000
+0200
@@ -29,6 +29,8 @@
/* #define TLS_INTERNAL
/* #include <tls.h>
/*
+/* char *var_tls_cnf_file;
+/* char *var_tls_cnf_name;
/* char *var_tls_high_clist;
/* char *var_tls_medium_clist;
/* char *var_tls_null_clist;
@@ -68,6 +70,8 @@
/*
/* void tls_param_init()
/*
+/* int tls_library_init(void)
+/*
/* int tls_proto_mask_lims(plist, floor, ceiling)
/* const char *plist;
/* int *floor;
@@ -156,6 +160,9 @@
/* tls_param_init() loads main.cf parameters used internally in
/* TLS library. Any errors are fatal.
/*
+/* tls_library_init() initializes the OpenSSL library, optionally
+/* loading an OpenSSL configuration file.
+/*
/* tls_pre_jail_init() opens any tables that need to be opened before
/* entering a chroot jail. The "role" parameter must be TLS_ROLE_CLIENT
/* for clients and TLS_ROLE_SERVER for servers. Any errors are fatal.
@@ -274,6 +281,8 @@
/*
* Tunable parameters.
*/
+char *var_tls_cnf_file;
+char *var_tls_cnf_name;
char *var_tls_high_clist;
char *var_tls_medium_clist;
char *var_tls_low_ignored;
@@ -643,6 +652,8 @@
{
/* If this changes, update TLS_CLIENT_PARAMS in tls_proxy.h. */
static const CONFIG_STR_TABLE str_table[] = {
+ VAR_TLS_CNF_FILE, DEF_TLS_CNF_FILE, &var_tls_cnf_file, 0, 0,
+ VAR_TLS_CNF_NAME, DEF_TLS_CNF_NAME, &var_tls_cnf_name, 0, 0,
VAR_TLS_HIGH_CLIST, DEF_TLS_HIGH_CLIST, &var_tls_high_clist, 1, 0,
VAR_TLS_MEDIUM_CLIST, DEF_TLS_MEDIUM_CLIST, &var_tls_medium_clist, 1, 0,
VAR_TLS_LOW_CLIST, DEF_TLS_LOW_CLIST, &var_tls_low_ignored, 0, 0,
@@ -687,6 +698,118 @@
get_mail_conf_bool_table(bool_table);
}
+/* tls_library_init - perform OpenSSL library initialization */
+
+int tls_library_init(void)
+{
+ OPENSSL_INIT_SETTINGS *init_settings;
+ char *conf_name = *var_tls_cnf_name ? var_tls_cnf_name : 0;
+ char *conf_file = 0;
+ unsigned long init_opts = 0;
+
+#define TLS_LIB_INIT_TODO (-1)
+#define TLS_LIB_INIT_ERR (0)
+#define TLS_LIB_INIT_OK (1)
+
+ static int init_res = TLS_LIB_INIT_TODO;
+
+ if (init_res != TLS_LIB_INIT_TODO)
+ return (init_res);
+
+ /*
+ * Backwards compatibility: skip this function unless the Postfix
+ * configuration actually has non-default tls_config_xxx settings.
+ */
+ if (strcmp(var_tls_cnf_file, DEF_TLS_CNF_FILE) == 0
+ && strcmp(var_tls_cnf_name, DEF_TLS_CNF_NAME) == 0) {
+ if (msg_verbose)
+ msg_info("tls_library_init: using backwards-compatible defaults");
+ return (init_res = TLS_LIB_INIT_OK);
+ }
+ if ((init_settings = OPENSSL_INIT_new()) == 0) {
+ msg_warn("error allocating OpenSSL init settings, "
+ "disabling TLS support");
+ return (init_res = TLS_LIB_INIT_ERR);
+ }
+#define TLS_LIB_INIT_RETURN(x) \
+ do { OPENSSL_INIT_free(init_settings); return (init_res = (x)); } while(0)
+
+#if OPENSSL_VERSION_NUMBER < 0x1010102fL
+
+ /*
+ * OpenSSL 1.1.0 through 1.1.1a, no support for custom configuration
+ * files, disabling loading of the file, or getting strict error
+ * handling. Thus, the only supported configuration file is "default".
+ */
+ if (strcmp(var_tls_cnf_file, "default") != 0) {
+ msg_warn("non-default %s = %s requires OpenSSL 1.1.1b or later, "
+ "disabling TLS support", VAR_TLS_CNF_FILE, var_tls_cnf_file);
+ TLS_LIB_INIT_RETURN(TLS_LIB_INIT_ERR);
+ }
+#else
+ {
+ unsigned long file_flags = 0;
+
+ /*-
+ * OpenSSL 1.1.1b or later:
+ * We can now use a non-default configuration file, or
+ * use none at all. We can also request strict error
+ * reporting.
+ */
+ if (strcmp(var_tls_cnf_file, "none") == 0) {
+ init_opts |= OPENSSL_INIT_NO_LOAD_CONFIG;
+ } else if (strcmp(var_tls_cnf_file, "default") == 0) {
+
+ /*
+ * The default global config file is optional. With "default"
+ * initialisation we don't insist on a match for the requested
+ * application name, allowing fallback to the default application
+ * name, even when a non-default application name is specified.
+ * Errors in loading the default configuration are ignored.
+ */
+ conf_file = 0;
+ file_flags |= CONF_MFLAGS_IGNORE_MISSING_FILE;
+ file_flags |= CONF_MFLAGS_DEFAULT_SECTION;
+ file_flags |= CONF_MFLAGS_IGNORE_RETURN_CODES | CONF_MFLAGS_SILENT;
+ } else if (*var_tls_cnf_file == '/') {
+
+ /*
+ * A custom config file must be present, error reporting is
+ * strict and the configuration section for the requested
+ * application name does not fall back to "openssl_conf" when
+ * missing.
+ */
+ conf_file = var_tls_cnf_file;
+ } else {
+ msg_warn("non-default %s = %s is not an absolute pathname, "
+ "disabling TLS support", VAR_TLS_CNF_FILE, var_tls_cnf_file);
+ TLS_LIB_INIT_RETURN(TLS_LIB_INIT_ERR);
+ }
+
+ OPENSSL_INIT_set_config_file_flags(init_settings, file_flags);
+ }
+#endif
+
+ if (conf_file)
+ OPENSSL_INIT_set_config_filename(init_settings, conf_file);
+ if (conf_name)
+ OPENSSL_INIT_set_config_appname(init_settings, conf_name);
+
+ if (OPENSSL_init_ssl(init_opts, init_settings) <= 0) {
+ if ((init_opts & OPENSSL_INIT_NO_LOAD_CONFIG) == 0)
+ msg_warn("error loading the '%s' settings from the %s OpenSSL "
+ "configuration file, disabling TLS support",
+ conf_name ? conf_name : "global",
+ conf_file ? conf_file : "default");
+ else
+ msg_warn("error initializing the OpenSSL library, "
+ "disabling TLS support");
+ tls_print_errors();
+ TLS_LIB_INIT_RETURN(TLS_LIB_INIT_ERR);
+ }
+ TLS_LIB_INIT_RETURN(TLS_LIB_INIT_OK);
+}
+
/* tls_pre_jail_init - Load TLS related pre-jail tables */
void tls_pre_jail_init(TLS_ROLE role)
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tls/tls_proxy.h
new/postfix-3.8.1/src/tls/tls_proxy.h
--- old/postfix-3.8.0/src/tls/tls_proxy.h 2023-03-03 18:57:50.000000000
+0100
+++ new/postfix-3.8.1/src/tls/tls_proxy.h 2023-06-04 22:58:32.000000000
+0200
@@ -44,6 +44,8 @@
* VAR_TLS_SERVER_SNI_MAPS.
*/
typedef struct TLS_CLIENT_PARAMS {
+ char *tls_cnf_file;
+ char *tls_cnf_name;
char *tls_high_clist;
char *tls_medium_clist;
char *tls_null_clist;
@@ -64,12 +66,12 @@
} TLS_CLIENT_PARAMS;
#define TLS_PROXY_PARAMS(params, a1, a2, a3, a4, a5, a6, a7, a8, \
- a9, a10, a11, a12, a13, a14, a15, a16, a17) \
+ a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19) \
(((params)->a1), ((params)->a2), ((params)->a3), \
((params)->a4), ((params)->a5), ((params)->a6), ((params)->a7), \
((params)->a8), ((params)->a9), ((params)->a10), ((params)->a11), \
((params)->a12), ((params)->a13), ((params)->a14), ((params)->a15), \
- ((params)->a16), ((params)->a17))
+ ((params)->a16), ((params)->a17), ((params)->a18), ((params)->a19))
/*
* tls_proxy_client_param_misc.c, tls_proxy_client_param_print.c, and
@@ -214,6 +216,8 @@
/*
* TLS_CLIENT_INIT_PROPS attributes.
*/
+#define TLS_ATTR_CNF_FILE "config_file"
+#define TLS_ATTR_CNF_NAME "config_name"
#define TLS_ATTR_LOG_PARAM "log_param"
#define TLS_ATTR_LOG_LEVEL "log_level"
#define TLS_ATTR_VERIFYDEPTH "verifydepth"
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tls/tls_proxy_client_misc.c
new/postfix-3.8.1/src/tls/tls_proxy_client_misc.c
--- old/postfix-3.8.0/src/tls/tls_proxy_client_misc.c 2023-03-03
18:57:50.000000000 +0100
+++ new/postfix-3.8.1/src/tls/tls_proxy_client_misc.c 2023-06-04
22:58:32.000000000 +0200
@@ -66,6 +66,8 @@
TLS_CLIENT_PARAMS *tls_proxy_client_param_from_config(TLS_CLIENT_PARAMS
*params)
{
TLS_PROXY_PARAMS(params,
+ tls_cnf_file = var_tls_cnf_file,
+ tls_cnf_name = var_tls_cnf_name,
tls_high_clist = var_tls_high_clist,
tls_medium_clist = var_tls_medium_clist,
tls_null_clist = var_tls_null_clist,
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tls/tls_proxy_client_print.c
new/postfix-3.8.1/src/tls/tls_proxy_client_print.c
--- old/postfix-3.8.0/src/tls/tls_proxy_client_print.c 2023-03-03
18:57:50.000000000 +0100
+++ new/postfix-3.8.1/src/tls/tls_proxy_client_print.c 2023-06-04
22:58:32.000000000 +0200
@@ -95,6 +95,8 @@
msg_info("begin tls_proxy_client_param_print");
ret = print_fn(fp, flags | ATTR_FLAG_MORE,
+ SEND_ATTR_STR(TLS_ATTR_CNF_FILE, params->tls_cnf_file),
+ SEND_ATTR_STR(TLS_ATTR_CNF_NAME, params->tls_cnf_name),
SEND_ATTR_STR(VAR_TLS_HIGH_CLIST, params->tls_high_clist),
SEND_ATTR_STR(VAR_TLS_MEDIUM_CLIST,
params->tls_medium_clist),
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tls/tls_proxy_client_scan.c
new/postfix-3.8.1/src/tls/tls_proxy_client_scan.c
--- old/postfix-3.8.0/src/tls/tls_proxy_client_scan.c 2023-03-03
18:57:50.000000000 +0100
+++ new/postfix-3.8.1/src/tls/tls_proxy_client_scan.c 2023-06-04
22:58:32.000000000 +0200
@@ -121,6 +121,8 @@
void tls_proxy_client_param_free(TLS_CLIENT_PARAMS *params)
{
+ myfree(params->tls_cnf_file);
+ myfree(params->tls_cnf_name);
myfree(params->tls_high_clist);
myfree(params->tls_medium_clist);
myfree(params->tls_null_clist);
@@ -144,6 +146,8 @@
TLS_CLIENT_PARAMS *params
= (TLS_CLIENT_PARAMS *) mymalloc(sizeof(*params));
int ret;
+ VSTRING *cnf_file = vstring_alloc(25);
+ VSTRING *cnf_name = vstring_alloc(25);
VSTRING *tls_high_clist = vstring_alloc(25);
VSTRING *tls_medium_clist = vstring_alloc(25);
VSTRING *tls_null_clist = vstring_alloc(25);
@@ -165,6 +169,8 @@
*/
memset(params, 0, sizeof(*params));
ret = scan_fn(fp, flags | ATTR_FLAG_MORE,
+ RECV_ATTR_STR(TLS_ATTR_CNF_FILE, cnf_file),
+ RECV_ATTR_STR(TLS_ATTR_CNF_NAME, cnf_name),
RECV_ATTR_STR(VAR_TLS_HIGH_CLIST, tls_high_clist),
RECV_ATTR_STR(VAR_TLS_MEDIUM_CLIST, tls_medium_clist),
RECV_ATTR_STR(VAR_TLS_NULL_CLIST, tls_null_clist),
@@ -189,6 +195,8 @@
¶ms->tls_multi_wildcard),
ATTR_TYPE_END);
/* Always construct a well-formed structure. */
+ params->tls_cnf_file = vstring_export(cnf_file);
+ params->tls_cnf_name = vstring_export(cnf_name);
params->tls_high_clist = vstring_export(tls_high_clist);
params->tls_medium_clist = vstring_export(tls_medium_clist);
params->tls_null_clist = vstring_export(tls_null_clist);
@@ -202,7 +210,7 @@
params->tls_mgr_service = vstring_export(tls_mgr_service);
params->tls_tkt_cipher = vstring_export(tls_tkt_cipher);
- ret = (ret == 17 ? 1 : -1);
+ ret = (ret == 19 ? 1 : -1);
if (ret != 1) {
tls_proxy_client_param_free(params);
params = 0;
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tls/tls_server.c
new/postfix-3.8.1/src/tls/tls_server.c
--- old/postfix-3.8.0/src/tls/tls_server.c 2023-01-27 22:58:27.000000000
+0100
+++ new/postfix-3.8.1/src/tls/tls_server.c 2023-06-04 22:58:32.000000000
+0200
@@ -420,6 +420,13 @@
tls_check_version();
/*
+ * Initialize the OpenSSL library, possibly loading its configuration
+ * file.
+ */
+ if (tls_library_init() == 0)
+ return (0);
+
+ /*
* First validate the protocols. If these are invalid, we can't continue.
*/
protomask = tls_proto_mask_lims(props->protocols, &min_proto, &max_proto);
diff -urN '--exclude=CVS' '--exclude=.cvsignore' '--exclude=.svn'
'--exclude=.svnignore' old/postfix-3.8.0/src/tlsproxy/tlsproxy.c
new/postfix-3.8.1/src/tlsproxy/tlsproxy.c
--- old/postfix-3.8.0/src/tlsproxy/tlsproxy.c 2023-03-03 19:50:15.000000000
+0100
+++ new/postfix-3.8.1/src/tlsproxy/tlsproxy.c 2023-06-04 22:58:32.000000000
+0200
@@ -142,6 +142,13 @@
/* The prioritized list of finite-field Diffie-Hellman ephemeral
/* (FFDHE) key exchange groups supported by the Postfix SMTP client and
/* server.
+/* .PP
+/* Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later:
+/* .IP "\fBtls_config_file (default)\fR"
+/* Optional configuration file with baseline OpenSSL settings.
+/* .IP "\fBtls_config_name (empty)\fR"
+/* The application name passed by Postfix to OpenSSL library
+/* initialization functions.
/* STARTTLS SERVER CONTROLS
/* .ad
/* .fi
