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Two exchange servers/outlook losing connection

Posted on 2006-11-20
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Last Modified: 2010-03-06
I have two exchange servers in one organization in two different physical sites connected by a T1 line. (same lan, one domain)

Users at SiteA have their mailboxes in ExchangeA (installed first) and users at SiteB have their mailboxes in ExchangeB.  Each exchange server sends out mail from their users, and incoming e-mails are handled by GFI pop2exchange.

Here’s the problem.

When the T1 goes down, outlook at SiteB is unable connect to exchange.  Even though outlook is configured to connect to ExchangeB, if ExchangeA is not available, it will not connect.  This is a problem with all installs of outlook at SiteB.   Outlook at SiteA doesn’t seem to care if it can’t find ExchangeB.

Any ideas?
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Question by:jjt187
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Expert Comment

by:mmudry
ID: 17981920
I believe that this is because yuor master server is probably Exchange A, which contains all the routing information.  ExchangeB has no routing information when it can't contact Exchange A.
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Author Comment

by:jjt187
ID: 17981983
yeah, that seems about right.  Is there a way to add router info to both servers?
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by:mmudry
ID: 17982178
Are they both bridgeheads?  If not, make them both.
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Expert Comment

by:Sembee
ID: 17982397
Routing information shouldn't matter for connecting to Exchange. All that routing information does is control the message flow. You can make changes to the routing setup to allow the servers to operate without the other, but that isn't this problem.

Do you have a global catalog domain controller with the other Exchange server?
Have you replicated the system folders from the first Exchange server to the second Exchange server?

Simon.
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Author Comment

by:jjt187
ID: 17982939
Both exchange servers are DC's and I'm sure they are both global catalogs.  my remote connection is down at the moment so I can't verify that.

The first exchange came online the beginning of august and the second the end of setpember.  Not sure about the system folder replication.  Does exchange do this on it's own?  if not how would I go about it?
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Author Comment

by:jjt187
ID: 17982970
Just checked, they are both global catalogs.  As far as the other FSMO roles, the are all on ExchangeA
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Sembee earned 500 total points
ID: 17983066
Exchange does not do system folder information on its own. You have to do that yourself.

This is the article on how to remove the first server.
http://support.microsoft.com/default.aspx?kbid=822931

I tend to ensure that the system folders listed in that article are on at least two servers - so if one is not available, the other has the required information.

Simon.
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Expert Comment

by:Vahik
ID: 17985822
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Author Comment

by:jjt187
ID: 18032374
I've made the changes posted by Sembee and am waiting for my onsite contact to test it
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