steve hmgszhqiwiwgmxnet originalnachricht datum wed 5 mar 2008 134440 0800 pst von gary c new rljdsngxyqohpostfixorg betreff challenging local senderrecipient spam issue spammers making raw socket connections postfix server spoofing one mynetworks domains server deliver valid recipient mynetworks domain smtp auth configured working method spamming unchallenged due viewed valid mynetworks domain best way postfix challenge method spam weve already explored reject_sender_login_mismatch feature aggressive environment wrong reject_sender_login_mismatch essentially need ensure sender smtp authed sending message regardless valid mynetworks domain ask reject_sender_login_mismatch offer assistance greatly appreciated respectfully gary psssst schon vom neuen gmx multimessenger gehört der kanns mit allen httpwwwgmxnetdegomultimessenger fri 08 aug 2008 135117 0100 challenging local senderrecipient spam