If I create a very basic rule, saying if the e-mail is from:
@MYDOMAIN.COM -or- @MICROSOFT.COM
then do (any action here)
Only e-mails from anyone at Microsoft.com will have the rule applied. It skips any e-mails that are internal (MYDOMAIN.COM)
I read something about Exchange not showing the full e-mail address internally (not sure if that's true), but looking at message headers (one for MICROSOFT.COM, one for MYDOMAIN.COM) they both have complete FROM: fields (i.e, First Last user@domain.xxx)
I assume this is an Outlook "feature" I'm unaware of?