View Full Version : backscatter mail

12-19-2006, 06:57 PM
I'm considering migrating from JunkMatcher to SpamSieve, partly because of the Python RegExp bug mentioned in the evaluating switch from JunkMatcher (http://c-command.com/forums/showthread.php?t=52) thread.

I'm also wondering if SpamSieve can effectively detect an ever-increasing amount of backscatter mail. I'm aware there are server-side methods for handing backscatter but I don't have enough control over my current MX/SMTP servers to do that. I use fetchmail to retrieve messages from those servers, which invokes procmail to do some local filtering so maybe that's a better spot to inject some sort of backscatter filtering than using SpamSieve? I do have the ability to run procmail on the MX servers but would prefer not having too many dependencies there since I might eventually switch servers.

Spam was quite manageable for me until the scourge of backscatter started hitting more heavily a few months. What makes it so troublesome is not being able to visually discriminate infrequent (but important) valid "MAILER-DAEMON" responses from all the rest. I'm still learning what role (if any) client-side filtering should have in dealing with this problem. Thanks for any help to resolve or at least better understand it.

Michael Tsai
12-19-2006, 07:34 PM
I'm not sure that you need any special server handling. For me, SpamSieve reliably separates the backscatter from the genuine bounces.