Public bug reported:
Ubuntu 12.04 LTS system in operation. Mailman lists were working prior
to doing updates with aptitude. After running updates on 8/24/2015,
mailman stopped working. mail.log shows, e.g.:
Aug 26 11:06:01 eclogite sm-mta[27095]: t7QF60VP027095: Milter accept: message
Aug 26 11:06:01 eclogite Mailman mail-wrapper: Group mismatch error. Mailman
expected the mail#012wrapper script to be executed as group "daemon",
but#012the system's mail server executed the mail script as#012group "smmsp".
Try tweaking the mail server to run the#012script as group "daemon", or re-run
configure, #012providing the command line option `--with-mail-gid=smmsp'.
Aug 26 11:06:01 eclogite sm-mta[27096]: t7QF60VP027095:
to="|/var/lib/mailman/mail/mailman post probeusers",
ctladdr=<probeus...@geo.umass.edu> (116/0), delay=00:00:00, xdelay=00:00:00,
mailer=prog, pri=31648, dsn=5.3.0, stat=unknown mailer error 2
Aug 26 11:06:01 eclogite sm-mta[27096]: t7QF60VP027095: t7QF61VO027096: DSN:
unknown mailer error 2
Since mailman and all the components of the mail system are aptitude
packages, fixing it from my end is not elementary. Subsequent aptitude
updates would likely break anything I tried to fix.
The specific updates that were run on 8/24/2015 were as follows:
chrisho@eclogite:~$ sudo aptitude upgrade
Resolving dependencies...
The following NEW packages will be installed:
linux-headers-3.2.0-89{a} linux-headers-3.2.0-89-generic{a}
linux-image-3.2.0-89-generic{a}
The following packages will be upgraded:
libsnmp-base libsnmp-perl libsnmp15 linux-headers-server linux-image-server
linux-libc-dev linux-server openssh-client openssh-server tzdata
10 packages upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
Need to get 55.7 MB of archives. After unpacking 218 MB will be used.
Do you want to continue? [Y/n/?] y
(followed by a reboot)
I don't know quite how that connects with sendmail and/or mailman, but
it is the only thing that changed about the system.
mailman is:
chrisho@eclogite:~$ aptitude show mailman
Package: mailman
State: installed
Automatically installed: no
Version: 1:2.1.14-3ubuntu0.2
sendmail is:
chrisho@eclogite:~$ aptitude show sendmail
Package: sendmail
State: installed
Automatically installed: no
Version: 8.14.4-2ubuntu2.1
Ubuntu is:
chrisho@eclogite:~$ lsb_release -rd
Description: Ubuntu 12.04.5 LTS
Release: 12.04
We run aptitude update and upgrade routinely, so everything should be at
the latest for 12.04 LTS.
** Affects: mailman (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1489073
Title:
Mailman mail-wrapper: Group mismatch error. after aptitude updates on
8/24/2015
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