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Exchange 2010 servers - Change Static IP Address

Exchange Servers :  Mailsrvr – Exchange 2003, and Exch1 and Exch2 – Exchange 2010 connected in a DAG
Needless to say, there’s Exchange 2003 to Exchange 2010 connector
The customer wants to change Exch1 and Exch2 Static IP Address and the DAG Static IP Address
The customer wants to move the IP Address to the 168.100 .X.X network
My questions are:  Can we change the Exch1 and Exch2 Static IP address without causing issues with the Exchange server?  Can I change the IP Address of the DAG?
Should I move all the mailboxes from the Exchange 2003 server to the Exchange 2010 server and removing the Exchange 2003 server first before changing Exch1’s, Exch2’s, and the DAG’s IP addresses.
If I change the Exch1 and Exch2 static IP address before I move the mailboxes – Will that disconnect the Exchange 2003 and Exchange 2010 connector?
Thank You
1 Solution
mat_sullivanInfrastructure EngineerCommented:
If it is anything like Exchange 2007 then Exch2010 will almost exclusively DNS for server identification so it should be a fairly safe process to change IP, as long as you make sure each component registers itself in DNS correctly once changed.
leoedwardsAuthor Commented:
According to Mat - he says it is fairly safe.  Will changing the Exch1 and Exch2 Static IP address ruin the connection between Exchange 2003 server and Exchange 2010 servers.  Should I move mailboxes over first and then remove the Exchange 2003 server - then change the IP Addresse - Would that be a better plan or can I change the Static IP Addresses now and will not ruin that connection. Also is it safe to change the Static IP Address of the DAG
Thank You
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