On: Self-hosted email is the hardest it's ever been, b...

[Normille]

  >Can you tell me how you did this? It'll be a bit help!

Sorry. It was a few months ago, so I can't remember the intricate details. And my config [as I said previously] was slightly out of the norm. But I did use this site which checks the state of your MTA-STS config and gives you a few clues as to what you need to twiddle:

https://www.mailhardener.com/tools/mta-sts-validator

EDIT: have you tried the MIAB forums? They're quite a helpful bunch:

https://discourse.mailinabox.email

[thunderbong → Normille]

Thanks! Going through the forum helped. Had to reach out to Microsoft and request them to unblock the IP.

Full details here -

https://discourse.mailinabox.email/t/how-to-unblock-from-mic...