> We are having a problem with our backend server filling up the root mailbox > with NDRs of users that are no longer with the company and I am trying to get > my brain wrapped around the whole SMTP process.
If the postmaster account is filling up with messages about trying to notify the original sender of the message and THAT's bouncing back (remember that 99.999% of spammers will spoof an address), then there's a sendmail configuration option for catching "double bounced" messages. Bounce 1: [EMAIL PROTECTED] tries to Email [EMAIL PROTECTED] - sendmail tries to notify [EMAIL PROTECTED] Bounce 2: when the MAILER-DAEMON message bounces from Hotmail that joe_spammer is not a valid account What I have on my system is a mail alias to 'cat' a message to /dev/null and point my double-bounce setting to that alias: /etc/sendmail.cf: O [EMAIL PROTECTED] -id ------------------------------------------------------- This SF.net email is sponsored by OSDN developer relations Here's your chance to show off your extensive product knowledge We want to know what you know. Tell us and you have a chance to win $100 http://www.zoomerang.com/survey.zgi?HRPT1X3RYQNC5V4MLNSV3E54 _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk