Public bug reported:
This procmail recipe was working in ubuntu 20.04 (procmail package
3.22-26 amd64)
:0
* ^X-Google-DKIM-Signature:
SENDER=| formail -cXFrom: | head -1 | formail -rtzxTo:
:0 af
| /usr/bin/formail -I "Message-ID:" -I "X-Gm-message-State:" -I
"X-Google-DKIM-Signature:"
:0 a
! $SENDER
It sends the incoming email back to a gmail sender stripped of certain
gmail headers.
It broke when we upgraded to ubuntu 24.04 (procmail package
3.24-1ubuntu2 amd64) sending email to foo@bar rather than the sender
which of course bounced
When failing, procmail logs messages like this: (set a LOGFILE,
VERBOSE=yes, LOGABSTRACT=yes )
procmail: Match on "^X-Google-DKIM-Signature:"
procmail: Assigning "SENDER="
procmail: Executing " formail -cXFrom: | head -1 | formail -rtzxTo:"
procmail: Executing
"/usr/bin/formail,-I,Message-ID:,-I,X-Gm-message-State:,-I,X-Google-DKIM-Signature:"
procmail: Assigning "LASTFOLDER=/usr/sbin/sendmail -oi foo@bar"
procmail: Notified comsat: "reflect@:/usr/sbin/sendmail -oi foo@bar"
From jvan...@umich.edu Fri Jan 24 15:13:33 2025
Subject: test4
Folder: /usr/sbin/sendmail -oi foo@bar 2789
procmail: Executing "/usr/sbin/sendmail,-oi,foo@bar"
(note foo and bar and certainly foo@bar do not occur anywhere in our
config and the assign SENDER= is not assigning anything to sender. My
assumption is that the foo@bar is a result of SENDER being an empty
variable.
piping a sample email through
formail -cXFrom: | head -1 | formail -rtzxTo:
on the command line correctly extracted the sender jvan...@umich.edu in this
case.
I have a workaround (rewrote recipe to this:)
SENDER=`formail -cXFrom: | head -1 | formail -rtzxTo:`
:0 f
* ^X-Google-DKIM-Signature:
| /usr/bin/formail -I "Message-ID:" -I "X-Gm-message-State:" -I
"X-Google-DKIM-Signature:"
:0 a
! $SENDER
and that works.
lsb_release -rd
No LSB modules are available.
Description: Ubuntu 24.04.1 LTS
Release: 24.04
apt-cache policy procmail
procmail:
Installed: 3.24-1ubuntu2
Candidate: 3.24-1ubuntu2
Version table:
*** 3.24-1ubuntu2 500
500 http://us.archive.ubuntu.com/ubuntu noble/main amd64 Packages
100 /var/lib/dpkg/status
** Affects: procmail (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2096676
Title:
procmail =| action assignment not working
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