Thanks for looking into this.
Here’s an earlier one, if that’s of interest:
,[scrubbed]@msn.com>: host
msn-com.olc.protection.outlook.com[52.101.8.45] said: 550 5.7.1
Unfortunately, messages from [135.181.6.248] 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
Troubleshooting. [Name=Protocol
Filter Agent][AGT=PFA][MxId=11BA1B2A28D3B106]
[DS2PEPF00003444.namprd04.prod.outlook.com 2024-11-27T08:04:25.571Z
08DD0D95164EDBB7] (in reply to MAIL FROM command)
In reply to my email
Sent: Wed Nov 27 09:04:xx GMT+01:00 2024
I hadn’t given it much thought the first time with all the infra works going on. Second time, today, it stuck so reported on telegram. Manoj forwarded me here.