the outgoing connection form the server is made to a random port on the client side.. check to see if you have any outgoing protocol rule that denies outgoing traffice on certain ports.. .. the incoming traffic to the server is on port 25 but outgoing port could be any random port.. you might want to check if there is any outgoing protol rule that defines to deny traffic on those ports. -----Original Message----- From: Dave Morrow [mailto:David.Morrow@xxxxxxxxxxxx] Sent: Thursday, November 29, 2001 4:40 PM To: [ISAserver.org Discussion List] Subject: [isalist] Publishing Exchange Server - Weird Problem http://www.ISAserver.org I have this very strange problem with publishing an Exchange server behind ISAServer. I use the "Secure Mail Server" publishing wizard to publish my Exchange server. Everything works fine with respect to POP/SMTP but Outlook clients connecting to my server can only resolve their mailbox name (when they setup their profile). When they launch Outlook it fails to connect to the server. I know it can connect since it properly resolves the name and sets up the profile. David A. Morrow Network Administrator Autodata Solutions Company David.Morrow@xxxxxxxxxxxx http://www.autodata.net <http://www.autodata.net> Phone: (519) 951-6067 Fax: (519) 451-6615 This message has originated from Autodata Solutions Company. The attached material is the Confidential and proprietary Information of Autodata Solutions Company. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete this message and notify the Autodata system administrator at ADMINISTRATOR@xxxxxxxxxxxx ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: syed.muqeem@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')