Hi Dave, Good link! You'll also see the same problem if you have the SMTP filter enable on the ISA firewall and you're running pre-Service Pack 1 ISA. Thanks! Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: David V. Dellanno [mailto:ddellanno@xxxxxxxxxx] Sent: Saturday, June 21, 2003 8:06 AM To: [ISAserver.org Discussion List] Subject: [isalist] RE: enable IMAP from Web http://www.ISAserver.org I know the realistate is abit tight but I would use OWA since it is less of a pain for setup and one less service and security vunerablity running on your Exchange. I might be mistaken but it sound like it might be a relay configuration at the exchange server. Could you send more specific errors. XCON: SMTP Clients Receive Relaying Prohibited Error Message When Authenticated Relay Is Enabled http://support.microsoft.com/default.aspx?scid=kb;en-us;295164 -----Original Message----- From: Simon Weaver [mailto:Simon.Weaver@xxxxxxxx] Sent: Saturday, June 21, 2003 9:18 AM To: [ISAserver.org Discussion List] Subject: [isalist] RE: enable IMAP from Web http://www.ISAserver.org