QUOTE(petzl @ Oct 23 2006, 06:55 AM)

Check your blacklist however mail should end up in held folder
That link only works if you're already signed into a SC webmail session, BTW, and I'm not sure what that would have to do with this, in that blacklist entries are entered manually, so if a user hasn't entered any of the domains from which they wish to receive mail there, it won't have any effect on incoming mail.
QUOTE
Your SpamCop email address is the only one you will ever need
Maybe so, but a bit of an over-generalizion, IMO, and not really an answer to this topic (perhaps you could put these things in your sig instead, petzl?
However, there's a FAQ item that might have been helpful (I see that the OP has already discovered the "mac.com" issue):
I clicked on the pinned item titled "Original SpamCop FAQ Plus - Read before Posting" then scrolled down to "SpamCop Email System & Accounts" where I found an item titled "Why can't I receive any email?" -
http://www.spamcop.net/fom-serve/cache/354.htmlDT