The reason SOME emails get blocked and others do not is because AOL uses many mail servers and it all depends (like the roll of dice) which mail server a particular email you sent went out through. If it happened to go out through one that SORBS has a temporary block on -- then you get the bounce from RootsWeb. If it goes out through a mail server that is NOT blocked, it goes through. It doesn't matter what list you are sending the email TO but rather it is determined by which mail server your message happens to go out through. Joan In a message dated 8/27/2010 12:17:25 P.M. Eastern Daylight Time, WJhonson@aol.com writes: My messages to this list are not being blocked. My messages to gen-medieval@rootsweb.com are. Explain that. Pat answers aren't very helpful. Sorbs is a horrible horrible awful worthless spam filter. All you have to do is google for it, and read the thousands of messages about how bad they are. My messages have been being blocked for several days now. Not just one message. I just today figured out why. And the answer makes me spitting mad. Absolutely furious.