On Wed, 29 Aug 2007 09:54:25 EDT, Mike said: > As I said the owner receives 3-4 per day. Is this a spammer who is > trying to send sign-off requests for random email addresses? I often easily see 3-4 a day of the following: 1) User subscribes as [log in to unmask] 2) User gets new account [log in to unmask], forwards cheapmail.com mail there. 3) user gets [log in to unmask], resets his forwarding on cheapmail, and closes down newmail.com 4) User goes to unsub, remembers they subbed under an old address, and sends the now-dead newmail.com address rather than the even older but still working cheapmail.com address. *usually*, looking at the From: for the unsub and likely near-matches on the list will show what's going on. If that doesn't flush it out, the list owner can always post a monthly reminder "Unsub from the address that was actually subscribed" and see if that helps... Or are the From: addresses totally and obviously bogus or otherwise not possibly just user errors?