Given that no external host can "see" the internal IP addresses, using the internal mail server IP doesn't make much sense. The MX record has to point to the ISA external IP where the mail server is published. Jim Harrison MCP(2K), A+, Network+, PCG ----- Original Message ----- From: "Martyn" <martyn@xxxxxxxxxxxx> To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx> Sent: Thursday, September 27, 2001 2:51 AM Subject: [isalist] Incoming Mail http://www.ISAserver.org I have setup ISA Server everything works but incoming mail.netstat shows it listening on port 25.I have the ISA server2000 book and have followed it to the letter but still no mail.We are connected to the internet by a router and 2meg connection internal DNS is forwarded to an external scource set up as recomended in the book.Should the MX record point to the internal IP of the mail server or the external card on the ISA server ?. "Help" been at this on and off for two weeks now getting ******off rapidly. Martyn ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jim@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')