Prolly a result of the IDS. There are a whole slew of different alerts that by default i believe flag the event log. I bet you could set it up to email you when it happens! or turn it off. Im not entirely sure how to define what sets off the event.. but some information is better then none, neh? -Jay -----Original Message----- From: Kirk Poser [mailto:kaptinkirk@xxxxxxx] Sent: Thursday, August 23, 2001 1:48 PM[Jay J. Mobley] To: [ISAserver.org Discussion List] Subject: [isalist] Error 17220 http://www.ISAserver.org Has anyone run across this yet? In the event viewer, I am seeing this daily: Event ID 17220 "An unknown SMTP command" Source: smtpevt I am running ISA on a member server, and behind it on another server is Exchange 2000. I can't seem to find out any information on this error? Kapt Kirk kaptinkirk@xxxxxxx ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: kaptinkirk@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jmobley@xxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') _____ Get more from the Web. FREE MSN Explorer download : http://explorer.msn.com <http://explorer.msn.com>