Crash Course

Exchange Server and DNS

From configuring and deploying a DNS server to diagnosing and troubleshooting DNS difficulties, this collection of tips, tutorials and tools explains how DNS works and shows how to configure it for optimal Exchange Server availability and performance.


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Properly formatting local DNS entries
Learn about common mistakes administrators make when creating internal DNS names and how they can affect Exchange Server functionality.

End reverse DNS lookups
Is your Exchange server slow, especially when dealing with Internet email? Learn how to disable reverse DNS, a common cause of a sluggish server, to remedy the problem.

Tutorial: A primer on DNS and MX records
One of the major components that helps an email message reach its intended recipient is a Mail Exchanger DNS record -- better known as an MX record. This four-part tutorial explains what MX records are and how they work. It then describes how to create an MX record and Host record on your own DNS server

Common Exchange Server mail delivery issues
Learn how to determine whether your MTA Stacks service, link failure or improper DNS configuration is the cause of your Exchange Server mail delivery problems.

Getting inside DNS
With the emergence of Active Directory, having a properly deployed DNS is a must to keep your network running correctly (or at all). Expert Laura E. Hunter breaks down the mechanics of DNS and explains how DNS clients and servers work together to resolve human-readable DNS names into IP addresses.

Excessive Exchange Server NDRs destroy DNS
A common side effect of spam is bogus non-delivery reports, which can create major problems on your DNS server. This tip explains three troubleshooting options for this issue.

Multiple domain names congregate to one server
You can aggregate multiple Domain Name System names so they point to the same Exchange server. Here's a tip that explains how.


Tools to automate DNS tasks
The less manual work you have to do with DNS zone files or the DNS interface, the better -- and there are a bunch of tools (some free) designed to automate most of the process of dealing with DNS.

DNS Dump: Free script for importing/exporting DNS information
DNS Dump is a free command-line batch file that imports and exports DNS information to a structured file, so you can move the DNS entries from site to site.

BL-Monitor: Optimize your DNS blacklists with BL-Monitor
BL-Monitor is a free utility that queries a customizable list of DNS blacklist servers at regular intervals and returns detailed, graphically formatted statistics about how well each blacklist server is performing.

Setspn: ActiveSync and front-end DNS aliases
Sometimes ActiveSync will not work if an SSL certificate is using the front-end server's DNS alias.

This was first published in March 2007

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