hy, i have an old version of postfix. i have this problem: from my server with sender freelo...@hotmail.com leave hundreds of spam messages to the Internet, I analyzed the file / var / log / maillog and I see this: BE80AB81E65 3272 Tue May 8 08:18:41 freelo...@hotmail.com (host smart-relay.mail.pippo.it[210.91.5.137] said: 451 DNS temporary error. (in reply to RCPT TO command)) g...@m2.lvlfe.com gogrant...@mn.rr.com gore...@mn.rr.com goverl...@mn.rr.com gpinv...@mstarmetro.net
how can I check who is the real user who generates envi spam? thanks