Yes, but you don't always want to reject such mails. NDR's, automated mails etc are often send from empty or non-existent e-mail addresses.
You will want to score points, like other SA tests. Maybe a good idea to write such a test, as it doesn't exist yet. I know nagios has some tools that can automate the TCP part, it would just need a shell around it. -Sietse -----Original Message----- From: Ralf Hildebrandt [mailto:[EMAIL PROTECTED] Sent: Saturday, March 10, 2007 20:32 To: users@spamassassin.apache.org Subject: Re: Tool for validating sender address as spam-fighting technique? * Kelly Jones <[EMAIL PROTECTED]>: > To fight spam, I want to validate the address (not necessarily in > real-time) of the a given email sender. Is there a Unix tool that does > this? Postfix has exactly this built in. It's the "reject_unverified_sender" restriction. -- Ralf Hildebrandt (i.A. des IT-Zentrums) [EMAIL PROTECTED] Charite - Universitätsmedizin Berlin Tel. +49 (0)30-450 570-155 Gemeinsame Einrichtung von FU- und HU-Berlin Fax. +49 (0)30-450 570-962 IT-Zentrum Standort CBF send no mail to [EMAIL PROTECTED]
