User Unknown

[Steve Hickel]

No matter what I do I can't get my exchange box to accept the below:

Any thoughts?

Thanks,

Steve

h5UK7843002574: h5UK7Gao002611: DSN: User unknown
Jun 30 16:07:16 Neptune - Msg h5UK7843002574: to=scott at gearresearch.com, delay=00:00:07, xdelay=00:00:00, mailer=esmtp, pri=120961, relay=192.168.1.15. [192.168.1.15], dsn=5.1.1, stat=User unknown
Jun 30 16:07:16 Neptune - Msg Uninfected: Delivered 1 messages