changing IP for exchange servers

We are in process of changing IP for exchange servers. what we need to  check on exchange level which server fall in this location and what will be activities from messaging end required here.
BuntyquestAsked:
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piattndCommented:
I'm guessing you're talking about Exchange 2003.

Exchange relies on DNS name resolution and basic network connectivity in order to communicate.  It doesn't matter what IP address you assign to the servers as long as the DNS updates are made quickly.

If you have multiple administrative groups and multiple servers in each group, you'll want to make sure you get DNS updated quickly so the exchange servers in all regions get the new update and route requests to the new IP address.

There should be nowhere in exchange that references an IP address directly, so once DNS is updated, everything should operate as per normal.  The one exception would be if you change the IP address on the front end server that receives mail from the outside.  You'll want to make sure if your public IP changes, that you update your MX record immediately as to limit loss of external mail delivery.  If it's behind a firewall, you'll need to make sure you adjust your firewall rules so the traffic is allowed and delivered to the new IP address you issue to it.
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AmitIT ArchitectCommented:
Whatever version you are using here. You just need to change the IP address, reboot the server. Make sure it got register in DNS. Use nslookup to test it. If not registered, run ipconfig /registerdns and test again by running nslookup and ping command. Do it during weekend's.
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Nick RhodeIT DirectorCommented:
1) Change IP on Exchange Server

2) Update the Internal DNS pointers to reflect the new IP change

3) Update/Change the port resolution on you firewall and make sure 25 and 443 are resolving to the new IP (your exchange).

4) reboot or do a ipconfig /flushdns

5) workstations will have to flush their dns and make sure the new pointers have been updated.
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BuntyquestAuthor Commented:
We are having Exchange 2003 environment
We have blackberry server also there in our environment . What are the changes need to be take at blackberry end also.

How to know which are the mailbox servers are associated with the Blackberry server?
Blackberry server 5.0 version.
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AmitIT ArchitectCommented:
You just need to change ip address and reboot your server. read what i said in my earlier post.
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Nick RhodeIT DirectorCommented:
You should be fine.  Changing the IP address is simple but allows you to also correct issues that arise for if something breaks that was referencing the IP vs DNS record.  This is what makes DNS a useful tool :).
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BuntyquestAuthor Commented:
Good going  thanks for clearing
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BuntyquestAuthor Commented:
Thanks
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AmitIT ArchitectCommented:
I don't understand what was wrong with my answer and no point given :-(
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