[Mailman-Users] sudden "group mismatch error"

Ben Byrne bbyrne at freepress.net
Thu Sep 2 20:32:31 CEST 2004

Hey everyone.

I just joined the list and this is my first post, so I apologize if 
it's out of sync with what's going on.

I've been running Mailman happily on our server (mac os x server on an 
xserve) for months. But suddenly today things have gone awry. 
Specifically, I'm now getting this error when I try to post to a list:

    ----- The following addresses had permanent fatal errors -----
"|/usr/local/mailman/mail/mailman post staff"
     (reason: 2)
     (expanded from: <staff at freepress.net>)

    ----- Transcript of session follows -----
Group mismatch error.  Mailman expected the mail
wrapper script to be executed as group "mailman", but
the system's mail server executed the mail script as
group "daemon".  Try tweaking the mail server to run the
script as group "mailman", or re-run configure,
providing the command line option `--with-mail-gid=daemon'.

Like I said, I've been running mailman for several months without 
problems, and am very surprised to get this message. Yesterday I made a 
minor change to our sendmail configuration (activated a feature), so 
I'm wondering if something hasn't changed in sendmail?  I understand I 
can rerun the configuration, as it says, but I'd prefer to "tweak the 
mail server" back to however it was before (de-activating the feature 
didn't seem to help). I don't believe the change I made should have 
affected who sendmail runs scripts as, all I did was activate 
FEATURE(`relay_mail_from'), but here I am with a problem.

Any help would be appreciated, I've got several live, active lists that 
are down as a result of this (!)

Ben Byrne
Information Coordinator
Free Press
413.585.1533, x11

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