There's got to be a better way...

[alexpgp]

My webmail provider scans incoming messages for signs of spam and one of the headers it adds is "X-Spam-known-sender", which as the name implies, indicates whether the message originates from a known sender of spam.

So, I added a rule to my "sieve" script, to directly place messages from such known spam senders in my "junk mail" folder.

It was a good thing I did that rather than just discard the messages, because a check of my "junk mail" folder this morning uncovered a number of legitimate emails. Evidently, the "X-Spam-known-sender" has a zero-tolerance policy about domains: if spam has ever been received from a domain, said domain is apparently forever besmirched.

Back to the drawing board.

Cheers...