m365

The Microsoft outage yesterday triggered a bounce storm when PMG is between M365 and the outside. The downstream effect of this is services like Amazon SES put IPs emitting bounces on their global suppression list. It is not clear how long an IP remains on that list, but Amazon documentation...

Hello! We're about to move mail from one 365 tenancy to another and we'd like to minimise downtime and NDRs. I was hoping to have mail delivered to pmg which would then hold it until we can release it, pointed at the new location. I'm sure I've done this before but I don't remember how - maybe...

We have messages from domain.com going to server.com, a few staff members want their mail hosted on Microsoft 365. I can't be the first guy with this situation - how have others configured PME & M365 to make this happen?