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Thursday, October 2, 2008

Outlook 2003 and ISA Firewall Client

Description

You need to enable user with Outlook 2003 to connect to external POP3 and SMTP server.
You have created an access rule in Internet Security and Acceleration (ISA) 2006 server. Also, you have installed ISA firewall client at the user computer. However the user still cannot connect to the external POP3 and SMTP server through Outlook 2003 even though you can telnet to those ports from the command prompt.

Resolution

Modify the Firewall Client Setting in ISA 2006

  1. Open the ISA management console, expand the server name and the expand the Configuration node.
  2. Click on the General node.
  3. In the General node, click on the Define Firewall Client Settings link in the Details pane.
  4. In the Firewall Client Settings dialog box, click the Application Settings tab.

  5. Click the Outlook entry and then click the Edit button. In the Application Entry Setting dialog box, change the Value from 1 to 0. Then click OK.
  6. On the Application settings tab, click Apply and then click OK. Then click Apply to save the firewall policy.

Next, on the client computer you need to refresh the firewall client configuration. You can do this by double clicking the Firewall client icon in the System Tray. On the General tab, click the Test Server button. You’ll see the Testing ISA Server dialog box and the name of the ISA firewall will be solved and the Firewall client will download the new configuration file.

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