Just to be sure because I didn't see you mention it, make sure you've contacted them via the form I often see linked so many different ways: https://sender.office.com
On Thu, Nov 17, 2022, at 10:26 PM, Ryan Prihoda via mailop wrote: > `Hey all,` > `` > `I received this rejection going to an msn account is there any way to > resolve this?` > `` > `host msn-com.olc.protection.outlook.com [104.47.18.97] `` SMTP error from > remote mail server after pipelined sending data block: `` 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 (S3140). You can also refer your provider to > http://mail.live.com/mail/troubleshooting.aspx#errors. > [AM6EUR05FT038.eop-eur05.prod.protection.outlook.com] ` > `` > `Thanks in advance,` > `` > * `R. Prihoda` > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop >
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