Yep, fill out this form: http://go.microsoft.com/fwlink/?LinkID=614866 Wait a few days for a reply. First reply might just be a "we're routing your ticket" response. Second reply might be useful, or it might be completely bonkers. You might have to calmly state your case repeatedly. They might say they see nothing wrong. Stick to your guns and show them the data. Eventually, after a number of replies, they'll say that the IP qualifies for mitigation and that the block will be rescinded within 48-72 hours. And that might even be true!
Good luck. Cheers, Al Iverson On Wed, Jun 24, 2020 at 4:28 PM Adam Moffett via mailop <[email protected]> wrote: > > Does anyone have any insight into how we get onto (or off) a Microsoft block > list? > > I started seeing these bounces around midnight on Tuesday: > > "550 5.7.1 Unfortunately, messages from [204.80.232.21] 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. " > > We don't have any current issues, but on Monday morning we did have a > compromised customer account send 200 spam emails. 200 triggered a limit and > they couldn't send any more. Later in the morning we disabled the > compromised account. This would have been about 18 hours before we started > seeing the bounces shown above. I'm assuming this is related, but I don't > know how I could have addressed the issue any faster, and I don't know why > there would be such a delayed reaction from Microsoft's system. > > Does anyone know anything of interest about this? > > > -- Adam Moffett, Network Engineer > Plexicomm - Internet Solutions | www.plexicomm.net > Office: 1.866.759.4678 x104 > > _______________________________________________ > mailop mailing list > [email protected] > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- Al Iverson // Wombatmail // Chicago Song a day! https://www.wombatmail.com Deliverability! https://spamresource.com And DNS Tools too! https://xnnd.com _______________________________________________ mailop mailing list [email protected] https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
