Chris Harms <chris@xxxxxxxxxxx> writes: > We are having some trouble with our servers sending out backscatter > spam. I realize this is really a Sendmail issue, but if any list > readers have some insights on the best way to make Sendmail stop > sending bounces to outside domains, it would be greatly appreciated. Make sendmail reject messages to non existing cyrus mailboxes in reply to "RCPT TO:" command in SMTP session. It makes host sending you the message responsible for generating bounce message. Take a look at solutions described at http://anfi.homeunix.net/sendmail/#cyrus * I suggest "Cyrus Aliases" in virtusertable or aliases for small sites or sites with stable list of user mailboxes. * Otherwise consider deploying "Real Time Cyrus Integration Version 2". (RTCyrus2). P.S. RTCyrus3 is under development http://groups-beta.google.com/group/cyrus-sendmail Testers are welcomed. -- [pl2en: Andrew] Andrzej Adam Filip : anfi@xxxxxxxxxxxx : anfi@xxxxxxxx Home site: http://anfi.homesite.net/ ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
