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Installing a branch exchange server discussion.

Posted on 2014-04-28
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I am planning to install exchange server in a branch as number of users are increased more than expected.
I have decided to create new DAG and CAS Array as per this discussion
But today my manager is telling me he is not convinced with this solution.

Do you think is there any other solution better than this?

These are the questions he asked me
If a user from branch send email how it flows?
How if a user from branch office access OWA?
How about moving mailboxes to branch?
How mapi clients from branch will work?
How activesync from branch will work.
How pop3 from branch will work.?

Is there anyone to guide/help me?
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Question by:-MAS
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by:Gareth Gudger
ID: 40027328
The first question to ask will be whether the branch has its own internet connection or not. This will greatly affect the possible answers to many of these questions.

Next, what is the speed between the sites, connection type (for example site to site VPN, or, point to point persistent connection) and the latency between the sites.

Will your DAG be split between sites? How many DAG members? Are you configuring a file share witness? Where will it be placed?
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by:-MAS
ID: 40027456
-->The first question to ask will be whether the branch has its own internet connection  
Yes they have their own internet.


-->what is the speed between the sites, connection type (for example site to site VPN,
Site to Site VPN and speed is 2MB

-->Will your DAG be split between sites?
I am planning to create a separate DAG with 2 members in the branch site.
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by:Gareth Gudger
Gareth Gudger earned 500 total points
ID: 40043080
If a user from branch send email how it flows?


Because the branch has its own internet you can either send the mail directly from the branch hub transport servers to the internet, or have your branch hub transport servers send it to the main site for internet bound mail. Really up to you. Just make sure you update any PTR or SPF records if you do send directly from the branch to the internet.

How if a user from branch office access OWA?

Because they have their own internet you can open ports 80/443 to your branch CAS servers and have clients go directly to the branch CAS. This would need its own A record. For example, https://branch.domain.com/owa.

Users could still go through the main site URL. If they do, OWA will redirect them to the branch CAS servers to log in.

How about moving mailboxes to branch?
Just initiate a Local Move Request from EMC. Their Outlook clients will automatically reconfigure themselves to the new server (if autodiscover is functioning correctly). Their phones should reconfigure as well if they support autodiscover via activesync.

How mapi clients from branch will work?
They will connect to the local brand CAS servers. Just rereading this thread. Don't see where Exchange version is mentioned. If Exchange 2013, MAPI connections aren't used any more. Its all via HTTPS now.

How activesync from branch will work.
Same as with OWA answer.

How pop3 from branch will work.?
Same as with OWA answer.
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Author Comment

by:-MAS
ID: 40043646
@Gareth Gudger
Many thanks for your support. Just read the below and please correct me if I am wrong.
or if you have better solution than below

-->OWA
I configured OWA silent redirect and it works even user know they are connecting to branch server.
-->Activesync
Activesync will get proxy to the branch server and I tested in a lab its working fine.
just need to configure the URLs in the branch server.
-->mailbox movement
I created a new subnet vlan which is not in use and I installed exchange as a VM and added to the current DAG and moved couple of mailboxes within 15 of minutes as a test.
Now I will move all the mailboxes and take the VM to the branch and cofigure the same vlan there and swtich on the server and move mailboxes to the new branch server DAG.

Note: I am sorry I did this test as I am running out of time.
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Gareth Gudger earned 500 total points
ID: 40048507
Yea everything sounds good there with the DAG mailbox moves.
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by:-MAS
ID: 40049511
Any idea about POP proxying?
POP not working as expected it is not proxying to branch server.
Branch server is proxying to the main server the other way is not happening.
What is missing ?
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Expert Comment

by:Gareth Gudger
ID: 40050241
Hmm not sure. It may be easier to point a new DNS "A" record at the branch server because it has its own internet. And open port 110 on the branch servers firewall.

POP is used less and less these days with Exchange. Just curious why you need POP.
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by:-MAS
ID: 40053538
Few users does not know how to maintain quota. For those users I configure POP so all the emails will be delivered locally.
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Expert Comment

by:Gareth Gudger
ID: 40054252
Ah I understand.
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Author Closing Comment

by:-MAS
ID: 40061051
Thanks
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