Undeliverable messages, not in Tracking Center?

Domino 6.5.1 Server, I was checking the STATREP log and there’s a ton of failed delivery, it gives me an error of the following:

Router: Unable to deliver message 0044A713 to i Joseph

I assume that 0044A713 is the message ID? But when I goto the tracking center and punch just that in for Today, last week, last two weeks, etc it tells me no results.

Where are these messages coming from? Tracking is on across all of the mail servers (SMTP and two internal mail servers that collect inbound/outbound from the SMTP)