[Mailman-Users] Group mismatch

[Mollatt Ntini]

Dear List,

I hope I find you all well. I hope someone can point me in the right 
direction. I am getting this group mismatch error on my list server:

=====
mailman at lists.me.com R=mailman_router T=mailman_transport: Child process 
of mailman_transport transport returned 2 from command: 
/usr/local/mailman/mail/mailman
=====

My server specs are as follows:

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FreeBSD 8.2
Exim 4.76
Python 2.7.2
Mailman 2.1.14
=====

On checking again, I get:
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/usr/local/mailman/mail/mailman post
Group mismatch error.  Mailman expected the mail
wrapper script to be executed as group "mail", but
the system's mail server executed the mail script as
group "wheel".  Try tweaking the mail server to run the
script as group "mail", or re-run configure,
providing the command line option `--with-mail-gid=wheel'.
=====

... and this was after I had recompiled mailman with wheel as the "gid" 
which it was expecting. Before then it was giving me:

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

I am not sure what I am missing.

Many thanks,

Molla.