Replacing an exchange server

So a couple of years ago i installed Exchange Server 2003 and setup a new AD then I added another domain controller.  Well my exchange server keeps freezing and I bought a new server to replace it, but I worried about how I should replace it.  I would like to move all the mailboxes to pst files then disconnect the server from the network install the new server and name it the same and import all the mailboxes.  Is there anything I should do special or worry about.  i wan to start it this weekend and have everything back up and running by monday.
sthomas76Asked:
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UbuntopCommented:
What is your reason for wanting to export to PST files?  You database will grow due to the loss of single instant storage.  Why not add the new server into the same site, migrate the mailboxes, then remove the original server?
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fbcbloodcenterCommented:
Why would you like to use the method you outlined? I ask because I think it would be much easier to bring the new server up alongside the current server and then just move the mailboxes over. Then decommision the old server.
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sthomas76Author Commented:
I wanted to keep it the same name, but i guess I don't have to.  
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sthomas76Author Commented:
I'm not the best at exchange I just don't know exactly what the steps I should take.  Right now I have a server that is scanning the emails for spam and viruses then pushing them to the exchange server.  
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UbuntopCommented:
The install is pretty straight forward, but using the same name can sometimes cause more headaches than conveniences.  i would do the transition approach, by introducing the new server and slowly migrating mailboxes and public folders over to the new server.  You will need to reconfigure the scanning server at some point to include the new server.  Be certain that you get all of your PF's replicated before removing the original server.  You will need a new OAB created on the new box as well.

This guide covers the removal of the first exchange box.
http://www.msexchange.org/tutorials/Removing-First-Exchange-2003-Server-Part2.html
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dmorrisroeCommented:
Here an article on how to keep the same server name with Exchange:

http://technet.microsoft.com/en-us/library/aa997176(EXCHG.65).aspx

But I'd also recommend creating the new Exchange server then moving the mailboxes to the new server, here's an article on how to use the move mailbox tool:
http://support.microsoft.com/kb/822892

As long as you have both Exchange servers on, you won't have to create a new mail profile at each PC.  Outlook will recognize that the mailbox has moved to a new server and adjust automatically.  Once that's done, follow the link provided by Ubuntop on your old server.
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sthomas76Author Commented:
How do you have MS Server 2003 SMTP Relay to two different exchange servers?
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UbuntopCommented:
Exchange will route the messages for you.

Are you using the standard IIS SMTP relay at the gateway?  This is dangerous.  That SMTP relay is very vulnerable compared to the Exchange SMTP service.
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sthomas76Author Commented:
I am bringing up the new exchange server today and I wanted to migrate my email account over first do I have to then change a setting on the old exchange server to send my email over to the new server.
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UbuntopCommented:
If your new server is joining the same site (that your mailbox is in), it will create a routing group and connector for you.  So moving your MB should not be a problem.  The routing is handled in the routing group, look around at the connectors etc.
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sthomas76Author Commented:
I am at the point to install exchange do I add it as the first exchange or additional exchange server
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UbuntopCommented:
Additional, then you will need to know the site name.
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sthomas76Author Commented:
I'm wondering if I should run domainprep since I will be taking down the old server.  Or should I run it after I migrate all the mailboxes.
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UbuntopCommented:
If the first server is already exchange 2003 and you are simply adding a server, you do not need to run domainprep.
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