Remove Exchange 5.5 and move Internet Mail Service to Exchange 2003

I have an exchange 2003 system that was upgraded from 5.5.  The 5.5 server is only sending internet mail at this time.  I want to set up the Exchange 2003 server to send internet mail and then remove the exchange 5.5 completely.  (I'm not receiving mail at this time).

Can someone point me in the right direction?

Thanks
oceansupportAsked:
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SembeeConnect With a Mentor Commented:
Do you already have the Exchange 2003 server in place? It isn't 100% clear from your question whether this is th case or not.

If it is, then the process for removing Exchange 5.5 is very simple and is outlined in the following kb article: http://support.microsoft.com/default.aspx?kbid=822450

Exchange 2003 doesn't have to do anything special to be able to receive email, all you need to do is change the firewall configuration to send email to an Exchange 2003 server instead.
If you are using SMTP Connectors to direct email out, then these need to be reviewed to ensure that the Exchange 5.5 server is not involved.
The changes to SMTP message flow can be made before you do anything to the Exchange 5.5 server.

Once you are happy that SMTP messages are flowing in and out of the org correctly, then you can think about removing the Exchange 5.5 server.

Simon.
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bilbusCommented:
How many users do you have?

This is a big job
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itcozaCommented:
Hi oceansupport,

Nice to hear that you will be retiring the old beast.  Here is what you are looking for: http://www.microsoft.com/technet/prodtechnol/exchange/guides/Ex2k3DepGuide/dcc2a9ca-0560-4389-aa4f-13e14793a3d3.mspx?mfr=true 

Note:  
- Backup everything before you start (Servers - Exchange - Data - Everything)
- If you have a firewall that is performing port forwarding for incoming mail, don't forget to change that also
- Set up a SMTP Connector on your Exchange 2k3 box - http://support.microsoft.com/?kbid=260973 

Issue to watch out for:
- http://support.microsoft.com/?kbid=898905


Regards,
M
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itcozaCommented:
oceansupport,

Do you need more information?

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Regards, M
   
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