If your ISP is hosting your external DNS, or if your external DNS server is located within a DMZ on your network, you don't need this rule.
If your external DNS server is located somewhere on your network, you need a DNS publishing rule.
- To create this rule, right click on the Firewall Policy container and select New -> Server Publishing Rule. Windows will launch the Server Publishing Rule Wizard.
- Begin by entering a name for the rule. In this case, just call the rule 'DNS.'
- Click Next. You will be prompted to enter the IP address of the server that you are publishing. Enter the DNS Server's IP address and then click Next.
- You will now be prompted to select a protocol. Select DNS server from the list of protocols and click Next again.
- On the IP Addresses screen, select the External checkbox and click Next, followed by Finish.
- You should be back at the main ISA Server console. Select the new rule and click Apply, followed by OK.
Step-by-Step Guide: How to use ISA Server as an SMTP filter
Step 1: Installing the SMTP service
Step 2: Configuring Internet Information Server
Step 3: Installing ISA Server 2004
Step 4: Creating an SMTP publishing rule
Step 5: Creating a DNS publishing rule
Step 6: Configuring the message screener
Step 7: Changing your DNS server's MX record
|ABOUT THE AUTHOR:|
| Brien M. Posey, MCSE
Brien is a Microsoft Most Valuable Professional for his work with Windows 2000 Server and IIS. He has served as CIO for a nationwide chain of hospitals and was once in charge of IT security for Fort Knox. As a freelance technical writer, he has written for Microsoft, TechTarget, CNET, ZDNet, MSD2D, Relevant Technologies and other technology companies.