[Mailman-Users] Weird Issues using Mailman

[Kyle McMartin]

Hi all,

I'm administrating a few lists with large numbers of subscribers (>700),
and for some reason, have been seeing weird behaviour from mailman.

We're using Debian testing, Mailman 2.1.5, and Postfix 2.1.5.

When attempting to send a message to one of these lists, I get crap
in the smtp-failure logs:

Mar 09 03:48:22 2005 (32326) delivery to <xxx>@engsoc.org failed with code -1: Server not connected

The message seems to get through to about 20 of the recipients, before
it barfs like this.

Searching around for this message, I found the suggestion of using 
MTA='Postfix' and explicitly setting the mail server address in 
/etc/mailman/mm_cfg.py. Unfortunately, this does not seem to help and
the messages persist.

I've tried explicitly setting SMTP_MAX_SESSIONS_PER_CONNECTION on a hunch
but unfortunately that did not help either. :(

This is getting to be exceedingly irritating, so any help you can 
give is greatly appreciated.

Thanks in advance,
	Kyle M.