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Exchange server 2003/2007 "branch cache" ?

Posted on 2009-05-06
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Last Modified: 2012-06-21
Hello.

I have the following scenario :
9 Vessel's with MailDeamon as mail server on each vessel.
Clients with outlook.
Each vessel has it's own domain, 2003 AD.

I want to do the following :
Replace this MailDeamon with either exchange 2003 or 2007 on all vessels.
We want the mail to be replicated from all vessels/domains/exchangeservers to 1 central exchange server in our HQ.
Do we have to have 1 exchange server onboard each vessel or is there a "server-cache" option that can replicate and take care of mail? (Not thinking about cached mode).
I mean that we can have 1 main exchange server handling all mail from all domains and 1 "cacheserver" on each domain?
Or is the best way/only way to have 1 exchange server on each vessel wich then connects to the main exchange server and replicates.
And can the central exchange server at our HQ handle upto 9 different mail"domains" ?

I am not that good at explaining what I want here. Ask questions if anything is unclear :)
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Question by:Laksen83
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tigermatt earned 500 total points
ID: 24317922

Exchange does not have replication built-in natively. Exchange is usually configured to store one user's mailbox on one Exchange Server, another user's mailbox on another server and so on. This reduces bandwidth, as user's always talk to their local server, and you are not replicating data back and forth with the HQ server.

You can use third-party tools such as DoubleTake to help replicating mailboxes between servers. There is also the possibility of an Exchange CCR cluster, but this is costly in terms of licensing. For 9 Exchange Servers, I would not be looking to configure replication. I would also strongly consider how many users there are in each site, and whether that warrants an Exchange Server being located there. For smaller branch offices, you could suffice with Cached Exchange Mode and perhaps one or two Exchange Servers in the HQ.

All email can be routed via the HQ Exchange Servers if you wish; they will automatically route email to the appropriate Exchange Server in the appropriate branch office when it arrives, since all the servers would be joined to the same Active Directory domain.

-Matt
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