Hi all, new MS Azure Cloudapp Spam Wave these days.
Just a few hosts, but a lot of Spam. There is a pattern there, they all use Return-Path: <MAILER-DAEMON> to disguise as a bounce and bypass any further checks. So the PCRE header check /^Return-Path: <MAILER-DAEMON>/ REJECT Forged Return-Path does not catch. Any other chance of making this work in postfix checks? Actually a re-visit to my topic about MS Azure Cloud Spam from December, but much more clarified matters now after some time of observation. Greets, Ludi
