Question on Microsoft Hosted Exchange:
There are a bunch of mail flow rules and we are troubleshooting an issue with a missing incoming message (from outside the org).

There is absolutely no trace of this message incoming from a message trace (Mail Flow -> Message trace) -- even a domain wide trace. Other emails ARE being delivered from this domain.

In case we have to audit our mail flow rules - would a rule (to block/delete a message) cause the message in question to not be shown in a message trace?

thanks!