Your message dated Tue, 21 Nov 2023 16:48:09 +0000
with message-id <[email protected]>
and subject line Re: Bug#1056352: postfix does not use the MX of the parent 
domain
has caused the Debian Bug report #1056352,
regarding postfix does not use the MX of the parent domain
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
1056352: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056352
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: postfix
Version: 3.7.6-0+deb12u2
Severity: important

When sending a mail to some @helpdesk.inria.fr address, postfix tries
to connect to helpdesk.inria.fr (which does not have a MX) instead of
using the MX of the parent domain inria.fr:

Nov 21 15:43:26 joooj postfix/smtp[748304]: D1A104A9: 
to=<[...]@helpdesk.inria.fr>, relay=none, delay=76462, delays=76431/0.1/30/0, 
dsn=4.4.1, status=deferred (connect to helpdesk.inria.fr[128.93.128.88]:25: 
Connection timed out)

Some admin at Inria tells me that this is incorrect and that postfix
should connect to the MX of the parent domain in such a case.

FYI:

joooj:~> dig -t mx helpdesk.inria.fr

; <<>> DiG 9.18.19-1~deb12u1-Debian <<>> -t mx helpdesk.inria.fr
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4551
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;helpdesk.inria.fr.             IN      MX

;; ANSWER SECTION:
helpdesk.inria.fr.      2260    IN      CNAME   prod-symfonyu20-app.inria.fr.

;; AUTHORITY SECTION:
inria.fr.               644     IN      SOA     dns.inria.fr. 
hostmaster.inria.fr. 2023112008 7200 1800 3600000 900

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Tue Nov 21 15:53:12 CET 2023
;; MSG SIZE  rcvd: 131

joooj:~> dig -t mx prod-symfonyu20-app.inria.fr

; <<>> DiG 9.18.19-1~deb12u1-Debian <<>> -t mx prod-symfonyu20-app.inria.fr
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30346
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;prod-symfonyu20-app.inria.fr.  IN      MX

;; AUTHORITY SECTION:
inria.fr.               586     IN      SOA     dns.inria.fr. 
hostmaster.inria.fr. 2023112008 7200 1800 3600000 900

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Tue Nov 21 15:54:10 CET 2023
;; MSG SIZE  rcvd: 108

joooj:~> dig -t mx inria.fr

; <<>> DiG 9.18.19-1~deb12u1-Debian <<>> -t mx inria.fr
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33064
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;inria.fr.                      IN      MX

;; ANSWER SECTION:
inria.fr.               1951    IN      MX      10 
mail3-smtp-sop.national.inria.fr.
inria.fr.               1951    IN      MX      10 
mail2-smtp-roc.national.inria.fr.

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Tue Nov 21 15:58:03 CET 2023
;; MSG SIZE  rcvd: 108

-- System Information:
Debian Release: 12.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 
'stable-debug'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-13-amd64 (SMP w/1 CPU thread; PREEMPT)
Kernel taint flags: TAINT_WARN
Locale: LANG=POSIX, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages postfix depends on:
ii  adduser                3.134
ii  cpio                   2.13+dfsg-7.1
ii  debconf [debconf-2.0]  1.5.82
ii  dpkg                   1.21.22
ii  e2fsprogs              1.47.0-2
ii  init-system-helpers    1.65.2
ii  libc6                  2.36-9+deb12u3
ii  libdb5.3               5.3.28+dfsg2-1
ii  libicu72               72.1-3
ii  libnsl2                1.3.0-2
ii  libsasl2-2             2.1.28+dfsg-10
ii  libssl3                3.0.11-1~deb12u2
ii  netbase                6.4
ii  ssl-cert               1.1.2

Versions of packages postfix recommends:
ii  ca-certificates  20230311
ii  python3          3.11.2-1+b1

Versions of packages postfix suggests:
ii  bsd-mailx [mail-reader]   8.1.2-0.20220412cvs-1
ii  emacs-nox [mail-reader]   1:28.2+1-15
ii  libsasl2-modules          2.1.28+dfsg-10
ii  mailutils [mail-reader]   1:3.15-4
ii  mutt [mail-reader]        2.2.12-0.1~deb12u1
pn  postfix-cdb               <none>
ii  postfix-doc               3.7.6-0+deb12u2
pn  postfix-ldap              <none>
pn  postfix-lmdb              <none>
pn  postfix-mta-sts-resolver  <none>
pn  postfix-mysql             <none>
ii  postfix-pcre              3.7.6-0+deb12u2
pn  postfix-pgsql             <none>
ii  postfix-sqlite            3.7.6-0+deb12u2
ii  procmail                  3.22-27
pn  resolvconf                <none>
ii  sasl2-bin                 2.1.28+dfsg-10
pn  ufw                       <none>

-- debconf information:
* postfix/main_mailer_type: Internet Site
  postfix/dynamicmaps_conversion_warning:
  postfix/relay_restrictions_warning:
  postfix/bad_recipient_delimiter:
* postfix/mailbox_limit: 1073741824
  postfix/main_cf_conversion_warning: true
* postfix/mynetworks: 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
  postfix/mydomain_warning:
  postfix/not_configured:
  postfix/rfc1035_violation: false
* postfix/root_address:
  postfix/newaliases: false
  postfix/sqlite_warning:
* postfix/recipient_delim: -
* postfix/destinations: joooj.vinc17.net, vinc17.net, joooj, 
localhost.localdomain, localhost
  postfix/compat_conversion_warning: true
* postfix/procmail: true
  postfix/relayhost:
  postfix/lmtp_retired_warning: true
* postfix/mailname: vinc17.net
  postfix/kernel_version_warning:
  postfix/retry_upgrade_warning:
* postfix/protocols: all
  postfix/tlsmgr_upgrade_warning:
* postfix/chattr: true

-- 
Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

--- End Message ---
--- Begin Message ---

On November 21, 2023 3:43:59 PM UTC, Scott Kitterman <[email protected]> 
wrote:
>
>
>On November 21, 2023 3:01:31 PM UTC, Vincent Lefevre <[email protected]> 
>wrote:
>>Package: postfix
>>Version: 3.7.6-0+deb12u2
>>Severity: important
>>
>>When sending a mail to some @helpdesk.inria.fr address, postfix tries
>>to connect to helpdesk.inria.fr (which does not have a MX) instead of
>>using the MX of the parent domain inria.fr:
>>
>>Nov 21 15:43:26 joooj postfix/smtp[748304]: D1A104A9: 
>>to=<[...]@helpdesk.inria.fr>, relay=none, delay=76462, delays=76431/0.1/30/0, 
>>dsn=4.4.1, status=deferred (connect to helpdesk.inria.fr[128.93.128.88]:25: 
>>Connection timed out)
>>
>>Some admin at Inria tells me that this is incorrect and that postfix
>>should connect to the MX of the parent domain in such a case.
>>
>
>I'm reasonably certain that's not correct.  I see you have also written the 
>postfix-users list.  I'm sure that the conversation there will clear up what 
>the correct behavior is.
>
>Scott K
>

Closing.  Not a bug.

Scott K

--- End Message ---

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