Hello list I'm looking for any assistance in trying to get off of an Outlook/Hotmail mailinst list with Microsoft.
We have a ticket opened with Microsoft - SRX1464104161ID - and they do not see why the IP is being blocked, but yet it is. We do not seem to be getting any responses on that ticket any longer. SNDS and JMRP are not reporting anything for this IP. The IP is not on any other public blacklist. I'm really kind of at a stand still. The specific error message we are seeing: 550 5.7.1 Unfortunately, messages from [XX.XX.XX.XX] 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. [DB5EUR01FT045.eop-EUR01.prod.protection.outlook.com] This rejection comes right after MAIL FROM in the SMTP transaction, so I do not believe it is related to DKIM signing. SPF is set up correctly. Reverse DNS is set up. For what it's worth, we are a web hosting / email service provider. Essentially we are renting the server and the IP space from another company that has the servers in the datacenter. From the error message being given, it's making me think that maybe the range of IPs is blacklisted in some way. But when the Microsoft tech replied back and said he couldn't see why our messages weren't being accepted, that kind of threw a wrench in that possible explanation. Or maybe that tech doesn't know what he's talking about. I'm really at a loss. Any help would be appreciated. _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
