Configuring DNS Resolution

To ensure that your Exchange server will be able to contact external mail servers and vice versa, you must ensure that Domain Name System (DNS) is on your network and can resolve Internet domain names. Use this checklist to verify that resolution is taking place correctly:

  • Assign a public IP address provided by your Internet service provider (ISP), public vendor, or host site to your ISA server's external network adapter.

  • Define your public Mail Exchange (MX) and Host (A) records and map them to the ISA server's external IP address.

  • Verify that your external domain is registered publicly—that is, you can look it up at a site like, or perform an Nslookup-type=mx domain command to see the IP addresses registered for your domain.


For detailed steps for configuring a DNS environment for your Exchange and ISA Server environment, see Chapter 4 in the "ISA Server 2004/Exchange Server Deployment Kit," at

Microsoft Internet Security and Acceleration ISA Server 2004 Administrator's Pocket Consultant
Microsoft Internet Security and Acceleration (ISA) Server 2004 Administrators Pocket Consultant (Pro-Administrators Pocket Consultant)
ISBN: 0735621888
EAN: 2147483647
Year: 2006
Pages: 173

Similar book on Amazon © 2008-2017.
If you may any questions please contact us: