[Mailman-Users] Another puzzler

[Martin Dennett]

This one has me completely baffled. Whenever a mail is hitting one of my 
lists, I'm getting an "undeliverable" bounce message. The message comes 
from "Mailer-Daemon at someisp.com", and the body of the mail states:

The message that you sent was undeliverable to the following: 

	bhaggett (UNUSED)

Herein lies the problem. "bhaggett" is not a member of the list, nor is "someisp.com" represented on the member list.

There is no other information in the bounce message, so how do I find out who the message is really trying to be delivered to?

Rgds

MD