Exchange 2010 cluster/want to stop failover

I have 2 Exchange 2010 Servers running at different sites in an Exchange cluster. Both Exchange servers reside on  a VM cluster as well.
All sites are in my MPLS

I am having issues where the server at the primary site goes off line for a short duration,(exchange migrates to another physical host) and so the other server at the other site takes control. (I know this is normal ).  The issue is I only have 1 firewall, (one inbound/outbound address for SMTP)  and when Exchange fails over to the secondary server I can no longer get external email and all of my PDA devices lose connection to there mailboxes.. I then have to manually go back and move the databases back under the primary server in order for mail be delivered externally.

Is there some way I can turn this off?  I want the cluster to exist in case there is a  true disaster and I need to reroute mail..
I would like to manually decide when to switch over to the secondary Exchange server as I deem necessary..
sullendAsked:
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AmitIT ArchitectCommented:
You can use PS command to disable it. Here are the steps:

Set-MailboxServer -Identity Servername1 -DatabaseCopyAutoActivationPolicy IntrasiteOnly
Set-MailboxServer -Identity Servername2 -DatabaseCopyAutoActivationPolicy IntrasiteOnly

Refer:

http://www.msexchange.org/kbase/ExchangeServerTips/ExchangeServer2010/HighAvailability/PreventDatabaseCopiesfromAutomaticallyMountinginotherSites.html

http://exchangeserverinfo.net/2011/09/how-to-control-the-mailbox-database-automatic-failover-process/

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Simon Butler (Sembee)ConsultantCommented:
Even if you have had a failover, mail should still flow.
I routinely bring mail in through a passive server in another site without any problems.
The devices being cut off shouldn't happen either, as long as both servers are configured correctly.

Both of those would suggest that you have a problem with the configuration, or the failover isn't happening correctly.

Do you actually mean the email isn't being delivered to your server, or to the mailboxes? As they are quite different. Any Exchange server in a forest can handle email delivery, so you need to be sure what is actually happening. If the email is not appearing in the mailboxes, then check the queue viewer to see what is happening to the email.

Simon.
sullendAuthor Commented:
thank you!
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