On Wednesday 01 December 2004 04:42, you wrote: > I'm runnung sendmail 8.12.3 with cyrusv2 local mailer (Debian woody > standard package) and cyrus 2.1.17 (backport from > http://people.debian.org/~hmh/). Today I had a heavy spam attack caused by > the fact, that sendmail accepts mails for non existing users. EMails to > unknown accounts on local domains (local-host-names) will be accepted and > than bounced. Is there a way to stop/reject these mails at "rcpt to: user > unknown"-point?
You can use virtusertable in sendmail. ie: [EMAIL PROTECTED] user1 [EMAIL PROTECTED] user2 [EMAIL PROTECTED] user3 @domain.com error:5.1.1:550 User unknow Or you can have a look at : "Real Time Cyrus Integration" -> http://anfi.homeunix.net/sendmail/rtcyrus2.html Antoine --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html