Hi! A mail server I'm happen to manage has lots of problems with rejects from outlook/hotmail mailservers.
The error message looks very generic: Reason: 550 5.7.1 Unfortunately, messages from [xxx.xxx.xxx.xxx] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol Filter Agent][AGT=PFA] Many identical cases can be found if one asks a friendly search engine for 'Protocol Filter Agent'. Most of the are answered with vage replies by hotmail/outlook support. The sending host has dkim, the domain is doing the same since 25 years, spf is fine, forward/reverse dns is fine. SNDS is active and coming up empty for the whole range. JMRP is active, no issues as well. So what's bugging hotmail/outlook this time ? -- In the nightmare of the dark W.H. Auden, 1940 all the dogs of Europe bark p...@opsec.eu +49 171 3101372 _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
