Q1 - how is the DMZ built; middle ground between ISA and upstream firewall / proxy or third-leg off the ISA itself? Q2 - how does the java app refer to the mail server; FQDN or IP? Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/authors/harrison/ Read the books! ----- Original Message ----- From: Arif, Aboo M To: [ISAserver.org Discussion List] Sent: Sunday, January 20, 2002 21:26 Subject: [isalist] Webserver and Inetrnal Mail server communication Problem. http://www.ISAserver.org Hi We have an application running on on our web server which is in dmz. In the application it using mailing which is not working now. It is a java application which is working fine if both application and mail server I in same network( internal.) As I published my internal Mail server I specified external ip of ISA server which I used for mail publishing in the application , but still not working. What can I do to enable communication between my Web servers in DMZ with Internal mail server. Any help on this will be highly appreciated. Regards Aboo Arif ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jim@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')