We were using Exchange 2010 for years, and recently I upgraded to Exchange 2013 and signed up for Exchange Online Protection over the weekend (all at the same time, upgrade, migration, sign up for EOP, etc.). Some mail is making it through just fine, while a lot of email is being blocked. EOP says the email was "delivered" but MessageTracking on our exchange box says Event ID: FAIL...
I'd like to know more about the FAIL ID... how do I find out what made it fail? I'm guessing it was a transport rule, but when I got to Mail Flow -> Rules - there is NOTHING there.
Running "Get-TransportAgent" returns these values:
I disabled the malware agent manually on my box since I'm using the EOP stuff now... how can I see or edit the rules that are in place if they do not show up as rules in the ECP?
It's big name companies like amazon, netflix, etc that are getting blocked... I can't see a reason why they would be blocked now on a migrated server and not on my old server... Can anyone provide some insight? I'd GREATLY appreciate it!