Getting the following message when one of my users tries to send outside. No one else is having the problem and the user can send inside with no difficulty. The following recipient(s) could not be reached: tnkrbel3@xxxxxxxxx on 18/03/2003 16:49 Unable to deliver the message due to a communications failure The MTS-ID of the original message is: c=US;a= ;p=SCPPOOL;l=COUNTACH-030318164853Z-701 MSEXCH:IMS:SCPPOOL:CORPORATE:DINO2 3502 (000B09AA) 502 Command Unimplemented Any help would be appreciated Bob bob hall scp distributors, LLC nt systems administrator 109 northpark blvd. suite 100 covington, la. 70433 <mailto:bob.hall@xxxxxxxxxxx> bob.hall@xxxxxxxxxxx 985.801.5233