I watch my company's Sendmail logs (maillog) every day
and often see pairs of entries like these ..

Sep 21 17:37:22 macdonaldcontractors sendmail[3972]: k8L7ZHZ03972: ruleset=check_mail, arg1=<nmzediczmgm@fdt.net>, relay=IDENT:Bll6KPgussCRUVitth0usG1iAEbr09IA@localhost.localdomain [127.0.0.1], reject=451 4.1.8 Domain of sender address nmzediczmgm@fdt.net does not resolve

Sep 21 17:37:24 macdonaldcontractors sendmail[3972]: k8L7ZHZ03972: from=<nmzediczmgm@fdt.net>, size=4592, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=IDENT:Bll6KPgussCRUVitth0usG1iAEbr09IA@localhost.localdomain [127.0.0.1]

On any day, the same message appears up to a hundred times.

Can anyone explain what it means please .. I think it's showing that my Server is quite properly detecting and bouncing spam .. am I correct?

Advice appreciated

Griffo

Please post your thread in only one forum. Posting a single thread in the most relevant forum will make it easier for members to help you and will keep the discussion in one place. While I appreciate you waiting a few days before crossposting it this thread still will be closed because it is a duplicate of http://www.linuxquestions.org/questi...d.php?t=485808. Next time please ask the moderator of that forum to move your thread for you.