"Tim Hunter" <[EMAIL PROTECTED]> wrote: > and at some point during the trip, my home ISP kindly reconfigured > their network and all of my hosts were given new IP addresses without > me knowing what they were.
Sounds like you need a Dynamic DNS service. Even if your addresses are allegedly static: if you don't trust the ISP not to mung them, in effect they are dynamic. > I don't like to accept and delete because that way there is no feedback > that tells the spammer it was simply rejected outright. Even worse: there is no feedback for a non-spammer (false positive). > Perhaps I'm delusional, but I'm convinced that my total rate of incoming > SPAM has lessened due to this reject-at-the-front-door policy.) It's a good policy, but it's better if you use it consistently. When a message arrives via your work MX, the front door is your work MX, and it would be better to reject the message at the front door. My suggestion for you: configure your home milter to accept every message that arrives from your work MX. If this gets you too much spam, use more aggressive blocking on the work MX. > Anyway, I think I might have to take Sam's suggestion and drop the > secondary MX'ing. The same scenario occurs when mail comes in that > generates 550 User unknowns as well (i.e., usually mis-targeted SPAM > that uses a bad address). This is a well known, classic problem. The classic solution is to keep the secondary MX informed about your valid user list, so it can generate those 550s directly. > What baffles me however is why there's been this sudden increase in these > DSNs since I moved my Courier server [...] a few tweaks to the aliases. > Surely I should've been getting them all along; not just now? Deliberately sending to a secondary MX, even when the primary MX is available, is a well known spammer trick. Possibly one of the spammers who has you on his victim list recently decided to add that trick to his bag, and the timing is just a coincidence. ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
