Forgive me for adding noise. But as I started this particular thread, it
seemed to me that it might be courteous to report that as of this
evening it has been completely resolved for us. This does not appear to
be in response to our tickets with them, this appears to be in response
to a fix that was deployed within the last few hours.
On 2026-02-23 14:48, Jarland Donnell via mailop wrote:
I just wanted to poke around and ask if anyone else was seeing an
increase in behavior like this today from MS:
451 4.7.650 The mail server [136.175.108.47] has been temporarily rate
limited due to IP reputation. For e-mail delivery information, see
https://aka.ms/postmaster (S775) [Name=Protocol Filter
Agent][AGT=PFA][MxId=11BCD799F8C0D17A]
[DB1PEPF00050A01.eurprd03.prod.outlook.com 2026-02-23T20:36:05.976Z
08DE6BCD08E3CD4A]
I mean, we fight harder against outbound spam than any ESP I've ever
witnessed, to the point that spammers frequently call me a "Nazi." No
significant number of complaints over their FBL, but every one is
actioned. I'll accept if it's just me, but it would be nice to hear
it's not just me.
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