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Exchange Server 2003/5.5

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by russellrl2

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I am presently running Exchange Server 5.5 on a Windows 2000 server. I am ready to install Exchange Server 2003 on Windows 2003. My goal is to put the Exchange Server 2003 online to test it while still using Exchange Server 5.5. After everything is good I am going to switch to the Exchange Server 2003. I want a backup plan in place so I believe I read somewhere that you can create multiple MX records with a priority to which server the mail goes to. If some reason it doesn't reach the new server, it will be delivered to the old server.

QUESTION: Is this correct. Are there any suggestions to what I am doing other than good luck.

3 replies

by charles_j_smith

yes, you are correct. You can setup multiple mx records with different priorities. This is heavily used across the industry for mail server redundancy.

Check this out:
http://www.xav.com/mx_lookup.pl?addr=bus.ucf.edu

bus.ucf.edu is a domain in which I used to work at. As you can see we are running redundant mail servers. Lowest preference will be delivered to first.

Whoever maintains your DNS should allow to configure different mx records and the like. This is also very helpful when you need to perform routine maintenace without knocking down mail for the users.

Hope that helps.
Chuck

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