Tony, > Nothing to do with OP's question, but I'd value particularly your answer > to the following question to do with the above: > > What is your (and possibly others') experience with sending bounce > notices to spammers? In my experience, not far from all spammer > addresses are forged, meaning either that one would get the bounce > message back (double bounce) from one's own MTA if the spammer's domain > didn't exist (NXDOMAIN or SERVFAIL), or from the MTA of the forged > spammer address if the spammer's domain did exist (again double bounce). > > IOW, my advice at the moment would be: "Don't bounce spam".
My current choice is to bounce a small range of spammy messages just above the kill threshold, just in case they are false positives: $sa_kill_level_deflt = 6.71; $sa_dsn_cutoff_level = 9; According to some feedback that I receive as a postmaster, it does a reasonably good job, meaning there is some non-negligible proportion of genuine mail in that range and it is good that these senders do receive a valuable DSN. Of course it also generates some undesirable backscatter, but it is not too bad, real massive spam usually gets much more than 9 score points. Mark ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ AMaViS-user mailing list AMaViS-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amavis-user AMaViS-FAQ:http://www.amavis.org/amavis-faq.php3 AMaViS-HowTos:http://www.amavis.org/howto/
