Hellow Debian citizen,
I've received a few bounce emails in the past, sometimes from Google,
sometimes from the Debian project. For example, it is said that
postfix's header_checks() cannot filter out two "From" fields.
So i made a simple bash script [5]. It is really simple!
Below is example log: (just normal status)
<quote: from mail.logs>
Feb 17 23:13:23 yw-0919 postfix/smtpd[16956]: connect from bendel.debian.org[2001:41b8:202:deb:216:36ff:fe40:4002]
Feb 17 23:13:24 yw-0919 postfix/smtpd[16956]: Untrusted TLS connection established from bendel.debian.org[2001:41b8:202:deb:216:36ff:fe40:4002]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
Feb 17 23:13:24 yw-0919 postfix/smtpd[16956]: B1080525A3: client=bendel.debian.org[2001:41b8:202:deb:216:36ff:fe40:4002]
Feb 17 23:13:24 yw-0919 postfix/cleanup[16964]: B1080525A3: resent-message-id=<handler.1127763.B1127763.1771369806345203@bugs.debian.org>
Feb 17 23:13:24 yw-0919 postfix/cleanup[16964]: B1080525A3: message-id=<aZTzv1huJS0s8QCC@freeshell.de>
Feb 17 23:13:25 yw-0919 postfix/qmgr[9738]: B1080525A3: from=<bounce-debian-bugs-dist=soyeomul=doraji.xyz@lists.debian.org>, size=430760, nrcpt=1 (queue active)
Feb 17 23:13:25 yw-0919 postfix/pickup[16711]: 56A39596CE: uid=1003 from=<bounce-debian-bugs-dist=soyeomul=doraji.xyz@lists.debian.org>
Feb 17 23:13:25 yw-0919 postfix/cleanup[16964]: 56A39596CE: resent-message-id=<handler.1127763.B1127763.1771369806345203@bugs.debian.org>
Feb 17 23:13:25 yw-0919 postfix/cleanup[16964]: 56A39596CE: message-id=<aZTzv1huJS0s8QCC@freeshell.de>
Feb 17 23:13:25 yw-0919 postfix/pipe[16965]: B1080525A3: to=<soyeomul@doraji.xyz>, relay=rfc2822, delay=0.65, delays=0.57/0.01/0/0.07, dsn=2.0.0, status=sent (delivered via rfc2822 service (From ok Date ok redirect to soyeomul+gcp@gmail.com ...))
Feb 17 23:13:25 yw-0919 postfix/qmgr[9738]: B1080525A3: removed
Feb 17 23:13:25 yw-0919 postfix/qmgr[9738]: 56A39596CE: from=<bounce-debian-bugs-dist=soyeomul=doraji.xyz@lists.debian.org>, size=430874, nrcpt=1 (queue active)
Feb 17 23:13:25 yw-0919 postfix/smtpd[16956]: disconnect from bendel.debian.org[2001:41b8:202:deb:216:36ff:fe40:4002] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
Feb 17 23:13:26 yw-0919 postfix/smtp[16983]: Verified TLS connection established to yw-1204.doraji.xyz[2a03:ebc0:5000:12::10]:2525: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
Feb 17 23:13:27 yw-0919 postfix/smtp[16983]: 56A39596CE: to=<soyeomul+gcp@gmail.com>, relay=yw-1204.doraji.xyz[2a03:ebc0:5000:12::10]:2525, delay=1.7, delays=0.03/0.02/0.92/0.76, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 5D91A6E3)
Feb 17 23:13:27 yw-0919 postfix/qmgr[9738]: 56A39596CE: removed
</quote>
Both yw-0919 and yw-1204 are forwarding-only email servers. And Always i
love Debian project, thanks!

Sincerely, Byunghee from South Korea
[5] <https://gitlab.com/soyeomul/Gnus/-/raw/7a302b522a3d1b052f6fccea8aae0bdd0823597e/TSG/rfc2822.sh>


--- PyGate Linux v1.5.11
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

soyeomul@doraji.xyz (Byunghee HWANG "(???)") writes:

Hellow Debian citizen,

I've received a few bounce emails in the past, sometimes from Google, sometimes from the Debian project. For example, it is said that
postfix's header_checks() cannot filter out two "From" fields.

So i made a simple bash script [5]. It is really simple!
Below is example log: (just normal status)
(...)
[5] <https://gitlab.com/soyeomul/Gnus/-/raw/7a302b522a3d1b052f6fccea8aae0bdd0823597e/TSG/rfc2822.sh>

This is real sample [6] from today email logs...
(two RFC2822.From email from bendel by reportbug 13.2.0)
I've certainly had experiences where emails with this pattern were
rejected by Google.

Sincerely, Byunghee
[6] <https://gitlab.com/soyeomul/Gnus/-/commit/56cb10c577d91b287604936ece7f9addad759523>


--- PyGate Linux v1.5.11
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

Why should it?

If there are two From fields, Google will complain and reject the email.
I actually had an email rejected by Google in the past. The email in
question, with two From fields, was from a Debian BTS.
Then below is today log in detail: <https://lists.debian.org/debian-user/2026/02/msg00312.html>

Thanks!


--- PyGate Linux v1.5.11
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

Hellow Marco,
Marco Moock <mm@dorfdsl.de> writes:

On 18.02.2026 12:40 Byunghee HWANG (???) wrote:

Why should it?

If there are two From fields, Google will complain and reject the
email.

I actually had an email rejected by Google in the past. The email in
question, with two From fields, was from a Debian BTS.

Then below is today log in detail:
<https://lists.debian.org/debian-user/2026/02/msg00312.html>

Those mails must be rejected at the MX debian servers. If that is not
the case, please tell that the postmasters (just user postmaster@domain)

Second, the origin needs to be found. Is that caused by improperly
configured reportbug?

Is that an issue with reportbug itself?

Thanks for comments. So i quietly submitted a PR [7] related to this.

Sincerely, Byunghee
[7] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1128469


--- PyGate Linux v1.5.11
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

So i quietly submitted a PR [7] related to this.

And this is a very minor issue. As above, the term "PR" is a term used
in the past in FreeBSD GNATS. (PR - Problem Report). Someone asked this question on another mailing list. I hope this isn't confusing with Git's
PR.
Thank you ^^^


--- PyGate Linux v1.5.11
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)