robert schetterer aydalxschettererorg jorey bump schrieb hanspeter kunz wrote 02222008 0712 im trying rewrite received headers sasl authenticated senders order avoid mails classified spam sending dynamic ip experience unnecessary long servers ip blacklisted external sites wont block mail users dynamic ips server classifying spam ways avoid example users submit mail via port 587 requires authentication filtered hi agree needed antispam solutions look last last hop mail analyse parameter taken dont matters ip sasl users injected mail one year ago problem marking mail spam telekom dyn ips headeranalysed delivered mailservers us university simply config failure antispam solution postmaster fixed best regards mfg robert schetterer germanymunichbavaria thu 07 aug 2008 201037 0100 header_checks handled differently emails one recipient