Microsoft KB Archive/203204

= How to obtain Internet Mail Exchanger records with the Nslookup.exe Utility =

Article ID: 203204

Article Last Modified on 10/25/2007

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APPLIES TO

 Microsoft Exchange Server 2003 Enterprise Edition Microsoft Exchange Server 2003 Standard Edition Microsoft Exchange Server 5.5 Standard Edition Microsoft Exchange Server 5.0 Standard Edition Microsoft Exchange Server 4.0 Standard Edition Microsoft Commercial Internet System 1.0 Service Pack 2 Microsoft Commercial Internet System 2.0 Microsoft Exchange 2000 Server Standard Edition, when used with: <ul> Microsoft Windows 2000 Standard Edition</li></ul>

<ul> Microsoft Windows XP Professional</li></ul> </li></ul>

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This article was previously published under Q203204

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SUMMARY
When you troubleshoot Simple Mail Transfer Protocol (SMTP) problems, you may want to obtain the Domain Name System (DNS) records for the SMTP domain in question. You can use the Nslookup.exe utility to collect this information.

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Requirements
DNS must be configured properly on the computer running the Nslookup.exe utility. If DNS is not configured, an error message is displayed when the Nslookup.exe utility starts.

Steps to Use the Nslookup.exe Utility
<ol> Open a command prompt.</li> Type the following:

nslookup

</li> Type the following:

set q=mx

This sets a filter to only collect Internet Mail Exchanger (MX) records and related information.</li> Type the following

.com

where  is the domain that you want to obtain the DNS records for, for example, microsoft.com or msn.com .</li></ol>

An output similar to the following is displayed:

Server: [157.178.72.30]

Address: 157.178.72.30

microsoft.com MX preference = 10, mail exchanger = mail1.microsoft.com

microsoft.com MX preference = 10, mail exchanger = mail2.microsoft.com

microsoft.com MX preference = 10, mail exchanger = mail3.microsoft.com

microsoft.com MX preference = 10, mail exchanger = mail4.microsoft.com

microsoft.com MX preference = 10, mail exchanger = mail5.microsoft.com

mail1.microsoft.com internet address = 131.107.3.125

mail2.microsoft.com internet address = 131.107.3.124

mail3.microsoft.com internet address = 131.107.3.123

mail4.microsoft.com internet address = 131.107.3.122

mail5.microsoft.com internet address = 131.107.3.121

Keywords: kbhowto kbtshoot kbnetwork kbsetup KB203204

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