hanspeter kunz rnthwifiuzhch fri 20080222 0735 0500 jorey bump wrote 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 thats correct problem delivery local users server classifying spam ways avoid example users submit mail via port 587 requires authentication filtered way filtered spamassasssin treat mails differently thanks hp hanspeter kunz university zurich systems administrator department information technology email rnthwifiuzhch binzmühlestrasse 14 tel 410446356714 office 2e07 httpwwwifiuzhch ch8050 zurich switzerland spamtraps fqnjwodsxjailabch hkunzbogusifiuzhch fools mortals lucius annaeus seneca thu 07 aug 2008 201255 0100 header_checks handled differently emails one recipient