Block "mail failure" messages?

Can someone either block the "mail failure" messages from cmact.com,
or remove the appropriate name from the list? I've so far received 46
of these messages, which at 32k a go makes a total of 1.4M of junk
email, which costs me money.

I did try mailing postmaster@ (and a whole host of other addresses)
to get them to turn it off, but all of them bounced :-(

Rob Partington
(getting tired of downloading 100's of K of worthless email)

Received on Sunday, 30 June 1996 13:12:40 UTC