I've been investigating postscreen, as we've been address probed/bombed for years, as we have a few domains that are very old (well, early 90s) that had a lot of users back in the dialup days. Our approach was to just throw hardware at the problem, and we've had a whole cluster of servers just sending out 550s all day long for years now.
We don't do any RBL checks at the postfix level; we have amavisd-new handle all of that via spamassassin. I'm hesitant to allow a single blacklist to determine the fate of mail acceptance, especially when we have a very low false negative rate with amavisd/SA. Essentially, we'd rather throw hardware at the problem than potentially reject legit mail. My primary question is, would we see significant improvement by using postscreen if we don't use RBLs? Also, would postscreen_cache_map work with a mysql backend? Thanks, Andy --- Andy Dills Xecunet, Inc. www.xecu.net 301-682-9972 ---
