500 POINTS HERE, this is URGENT
I have recently set up an exchange server 2003, everything works great, except when we try to send to one particular email address, We immediately get the following bounceback.
The following recipient(s) could not be reached:
'USERNAME@umn.edu' on 10/14/2004 12:40 PM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
rg #5.7.1 smtp;550 5.7.1 <USERNAME@umn.edu>... Rejected by user; see: <http://umn.edu/mc/p?EAxF35zhbdHzNdTyv6TG8CNknYgRdfMR9$HqK7FRoWdTjrp2rczX3KTPq5sJ5N6QanneyGAGADrv7o8dwwf1wgA
The recipient said they ran us through open relay databases, and we came up dirty. I ran it before I rolled it out, and thoroughly checked it, and found no evidence of an open relay. Today I did the same thing after reading the response from the recipient and they all came up clean.
PLEASE HELP, I need this fixed like it was yesterday.
Thanks ahead of time,