On Tue, Feb 28, 2006, Joel Gudknecht wrote: > I have a mail filter gateway setup running sendmail, smtp-vilter and > spamassassin. All incoming mail gets delivered to this machine before > being passed onto an exchange server. My issue is whenever a spammer > sends mail to a bogus user at my real domain, I get a DSN from the > sendmail box because exchange is configured to only accept email for > accounts that actually exist. I'm considering the -N never option of
Hence you should do the same on the sendmail machine: don't accept mail for unknown recipients. You can search the news:comp.mail.sendmail archives for various suggestions how to do that (virtusertable, access_db, LDAP, milter, ...) > sendmail but I wanted to run it by the list first because I know not > sending notifications isn't the best idea. Any other things I can do > to resolve this problem? Thanks. -N doesn't work in server mode.
