I am getting the following in my Event Viewer: Event Type: Error Event Source: SmtpEvt Event Category: None Event ID: 20033 Date: 10/28/2003 Time: 8:10:37 AM User: N/A Computer: Description: The SMTP command exceeded its allowed length Data: 0000: 4e 4f 4f 50 20 20 20 20 NOOP 0008: 20 20 20 20 20 20 20 20 0010: 20 20 20 20 20 20 20 20 0018: 20 0d 0a .. I can't really find anywhere in the logs to track down what is going on. We just recently started hosting our own mail and I have exchange published in a back to back ISA environment. Any help on how to track this down is appreciated. Steve