Hello all, I’m a super low volume sender (basically, family only) and today I emailed someone at hotmail and got:
> <redacted>@hotmail.com: 550 5.7.1 Unfortunately, messages from [45.32.136.82] > weren't sent. Please contact your Internet service provider since part of > their network is on our block list (S3140). You can also refer your provider > to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol > Filter Agent][AGT=PFA][MxId=11BDC63846E9567C] > [AMS0EPF000001B7.eurprd05.prod.outlook.com 2026-07-21T07:15:41.759Z > 08DEE31C291DD028] Searching my mailop archives for S3140 only finds one hit (from Michael Wise in 2022). From Michael Wise’s signature, and also the link on https://substrate.office.com/ip-domain-management-snds/Postmaster/Troubleshooting (followed from the link in the above rejection message) the form to use is http://go.microsoft.com/fwlink/?LinkID=614866 I see other messages that shows the form to use is at https://olcsupport.office.com/, but I think that is for S3150 (perhaps a different product group?). Either one requires me to log in with a Microsoft account. Is there a form I can use that doesn’t require a login, or should I just make one so I can fill out the form? Thanks, Sean _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
