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Article ID: 146556 - Last Review: September 30, 2013 - Revision: 3.4

 
This article was previously published under Q146556
This article has been archived. It is offered "as is" and will no longer be updated.

SUMMARY

This article discusses the method that the Internet Mail Service uses to obtain the IP address of the recipient's server when the Internet Mail Service is configured to deliver messages using DNS.

MORE INFORMATION

When the Internet Mail Service is configured to deliver messages using DNS, it uses the following method to obtain the IP address of the recipient's server:
  1. The Internet Mail Service queries the appropriate DNS server for mail exchanger (MX) records.
  2. If the Internet Mail Service is unable to obtain the IP address by querying the DNS server, it requests the following information from the Windows NT server:
    • Address (A) records

    • Alias (CNAME) records

    • WINS servers

    • LMHOSTS file
For information about problems that can arise when you attempt to establish TCP/IP connections using DNS, please see the following articles in the Microsoft Knowledge Base:
163391  (http://support.microsoft.com/kb/163391/EN-US/ ) Troubleshooting problems communicating with a server on the Internet using a dial-up networking connection in Windows 2000, Windows NT 4.0, or Windows NT

169790  (http://support.microsoft.com/kb/169790/EN-US/ ) How to Troubleshoot Basic TCP/IP Problems in Windows NT 4.0

APPLIES TO
  • Microsoft Exchange Server 5.0 Standard Edition
Keywords: 
kbnosurvey kbarchive kbnetwork kbusage KB146556
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