Receiving multiple copies of LISTSERV list mail
If you're receiving duplicate messages sent to a LISTSERV mailing list, you're probably subscribed to the list twice. Request to see the subscriber list; see On my LISTSERV list, how do I get a list of current subscribers?
Examine the subscriber list. Look for multiple occurrences of your email address, as well as the addresses of other mailing lists you receive. Mailing lists frequently subscribe to other mailing lists.

