Okay, I'm not sure where to look, but I'm sure this is a simple fix. I keep getting an error and I'm guessing I just typed too fast.

Code:
Errors
2008-08-03 01:10:30 bounced (Host or domain name not found. Name service error for name=northbrain.comgran type=A: Host not found)
Our domain is obvious and my name is Grant so I'm guessing I just typed too fast. This error pops up everyday. What file can I grep for the ".comgran" bit to edit it?