Le jeudi 23 juillet 2009 à 20:13 +0200, Julien Valroff a écrit :
> Hi,
>
> You will find attached a patch against current git, completing the
> existing documentation for Postfix.
>
> It adds notes about chrooted postfix setups and a method to only filter
> incoming mail when the SMTP server is also used as a relay.
Forgot a part in my first patch, here is a fixed file.
Cheers,
Julien
diff --git a/doc/postfix.txt b/doc/postfix.txt
index f6ee1d6..d41e8e1 100755
--- a/doc/postfix.txt
+++ b/doc/postfix.txt
@@ -83,6 +83,51 @@ smtp inet n - n - - smtpd
This tells Postfix to send all mail to DSPAM for content filtering.
+ If your Postfix installation is chrooted (as eg. the default Postfix
+ configuration in Debian GNU/Linux), make sure the socket is located
+ within the chroot (eg. /var/spool/postfix/var/run/dspam/dspam.sock).
+
+ Make sure the user under which dspam runs has write access to the
+ socket directory.
+
+ You can also change Postfix configuration so that it does not run
+ chrooted (both smtp and lmtp services should be modified as follows:
+
+smtp inet n - n - - smtpd
+ -o content_filter=lmtp:unix:/var/run/dspam/dspam.sock
+lmtp inet n - n - - smtpd
+
+ The 3rd dash specifies if the process will run chrooted or not.
+
+
+ If your SMTP server is also used as a relay, and you want DSPAM to
+ only inspect incoming mail, you can use the following as an alternative
+ to the pure content filtering method:
+
+ You will need Postfix support for PCRE maps (perl compatible regular
+ expression).
+
+ In Postfix main.cf, add the following to your smtpd_recipient_restrictions:
+
+smtpd_recipient_restrictions =
+ [...]
+ check_recipient_access pcre:/etc/postfix/dspam_filter_access
+
+ where dspam_filter_access contains:
+
+/./ FILTER dspam:dspam
+
+ Run postmap /etc/postfix/dspam_filter_access
+
+ Add he following service at the end of master.cf:
+
+dspam unix - n n - - pipe
+ flags=Ru user=dspam argv=/usr/bin/dspam --client --deliver=innocent,spam --user ${recipient} --mail-from=${sender}
+
+ You will also have to add the following line in main.cf:
+dspam_destination_recipient_limit = 1
+
+
Step 3: Configure a reinjection port
You'll also need to configure Postfix to listen on a local port for
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