[Mailman-Users] mailing list just stopped working

[Andrew Zolty]

We have version 2.1.5 running off our server and have been using it for 
over a year and it has worked great. All of a sudden - and we haven't 
touched a thing server-side, we no longer are able to write to our 
mailing list. Nothing appears in the archive, the message is definitely 
sent, but the mailing list never seems to receive it.

Any ideas?