Mailman mailing lists - upndown [moved]

Mailman mailing lists - upndown

Heya folks, I'm hoping that somehow you can help me.

I have a hosting account with QAwebhosting.com - they provide me with cpanel.
In the past, I've had no problems with running mailman, and run a list for myself and some old uni friends. There is a relatively high amount of traffic (say 3 emails an hour during the day).

During a recent upgrade, mailman started playing up, so we transferred to a new server, and things looked to be working okay for a while.

Now, Mailman is doing some wierd things, like only forwarding 40% of the messages sent. I can see all messages in the archive, but only 4 or 5 in every ten actually make it to my inbox.

All filters etc are switched off, so that shouldn't be the problem.

Any advice, I don't even know where to start. I don't have complete access to the server (as I'm only a client). Support at the host are just shrugging their shoulders at me.

Thanks again,

Rochey