The link you provided has instructions on how to contact the support teams. This is the best (only really) way to get help from the Outlook team.
Expect long delays as lots of platforms are seeing issues at MSFT domains this week with a similar bounce email. ~ Matt On Wed, Jan 21, 2026 at 3:28 PM Erik Levinson via mailop <[email protected]> wrote: > Hello, does anyone have a Microsoft contact that could help with a > deliverability issue that started approximately two days ago? > > We (LeapAP) are seeing a large and increasing volume of errors such as the > below (XXXX is our dedicated IP at our ESP) and are unable to deliver mail > to our users with the following destination domains (so it seems like the > hosted Office 365 domains aren't impacted, but only the free/Outlook.com > ones): > hotmail.com > hotmail.ca > live.ca > msn.com > outlook.com > live.com > > 4.7.650 The mail server [XXXX] has been temporarily rate limited due to IP > reputation. For e-mail delivery information, see https://aka.ms/postmaster > (S775) > > SNDS shows nothing abnormal for the IP address during the involved time > period or earlier, but I can only see up to yesterday @ 18:00 PT there. > > We submitted the Microsoft form at https://olcsupport.office.com/ and > have a ticket number as a result, which I can share as well. > > Appreciate the help as we're quite impacted and getting a lot of support > tickets. > > Thanks > > Erik Levinson > LeapAP > > _______________________________________________ > mailop mailing list > [email protected] > https://list.mailop.org/listinfo/mailop >
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