I have configured exchange 2k3 to host email for an external affiliate organization. I have follwed the instructions given in http://www.experts-exchange.com/Networking/Email_Groupware/Exchange_Server/Q_21896895.html
. However, I have encountered a problem configuring outlook. I have confirmed that the exchange is configured by logging into the OWA using the username and password of the externally hosted org and it successfully logs in. MX records are in place and resolving. however when configuring outlook from the external organization using the exhcange server, it hangs on communication with the incoming mail server, No Error is presented but it just hangs. Any suggestions would be great.
Exchange is behind ISA 2004
proxy is enabled
open ports thru firewall are
thanks in advance.