[Mailman-Users] Group Missmatch

[Patrick Savelberg]

Hi,

i'm new to the mailman ... i installed it with my macosx server 10.3.4 
...
and i put back the database from the early installation ...

When i want to sent a mail to the mailing list i get this error

<dkvall at dkv.nl>: Command died with status 2: 
"/usr/share/mailman/mail/mailman
     post dkvall". Command output: 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 "adplus".  Try 
tweaking the
     mail server to run the script as group "mailman", or re-run 
configure,
     providing the command line option `--with-mail-gid=adplus'.
Reporting-MTA: dns; xserve.dkv.nl

How to fix this problem ???

thxs ..

Greetings,

Patrick