We just migrated from 2010 to 2013 and all seems to be working well... We started using EOP at the same time with only a few hiccups. Our Get-MessageTrackingLog command shows all of our email that was delivered or failed, etc... but when I try to run"Mail Flow -> Delivery reports", it forces me to select a mailbox and I leave the other fields empty - and it only shows emails that come directly to me. The problem is, I have half a dozen email accounts that are set to forward their email to my exchange account. None of those emails show up with the delivery reports method - but they DO show up via the powershell get-messagetrackinglog command...
With EOP I can see all the emails if I use "Mail Flow -> Message Trace"... why does it work with EOP, but on our local box - it's nerfed to just emails who specify my direct exchange address?