Exchange Server behind Proxy Server

Exchange is a Proxy aware product and can utilize wspcfg.ini settings to bind ports on the Proxy server. The Proxy server 'listens' for TCP port traffic for the ports you bind in the INI file. This is called server proxying. To enable Exchange to function behind the proxy:
Load the Winsock Proxy client on the Exchange Server. Setup the *.ini file described in the KB article Q181420. Make sure access control is set properly on the Proxy server and restart the Exchange server. Don't forget the MX record for Exchange. The IP address should be the external NIC's address of the Proxy server.
Good luck...

Otto

It's pretty simple - if the previous answer has the correct Q article- it's straight forward.

Remeber one other thing though, you MUST disable the SMTP service on the proxy server.

Also, If you want to se Outlook Web Access, you must have Sp1 for proxy server installed.

In order to test, make sure you are on a machine outside the firewall (i.e. on the internet). Then telnet to ports 25 and 110 (SMTP and POP3) using the external address to your proxy server. (telnet aaa.bbb.ccc.ddd 25, etc). If it's working you will get an exchange server message banner on your telnet screen.

Good Luck.

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