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Exchange 2010 new cert problem

Posted on 2014-10-13
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Last Modified: 2015-06-02
I have two Exch2010SP3 servers, one in each of two AD sites.  Layout below:

SiteA-------------------------------Internet
    EXCH1
|
|
|
SiteB
    EXCH2

In preparation for a migration to Office365, I bought a 3rd party cert for EXCH2 to allow external access for mailbox migrations.  I assume that I'll need to redirect OWA/ECP to this new cert's URL.  We currently have the one OWA cert to SiteA/EXCH1 that proxies for SiteB/EXCH2.  
In order to change this proxy and allow external OWA access to EXCH2 I will need to do the following:

Change ExternalURI values for OWA and ECP on EXCH2
Bind the new cert to https on EXCH2

I know there's at least two other steps but I'm drawing blanks..
What am I missing?
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Question by:Ben Hart
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Expert Comment

by:Simon Butler (Sembee)
ID: 40377002
It is the presence of the external URL that tells Exchange whether to proxy or redirect.
Therefore if you configure an external URL then restart IIS, you shouldn't need to do anything else on Exchange. Open port 443 and ensure the second host name resolves to the Exchange server and Exchange will do the rest.

Simon.
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Author Comment

by:Ben Hart
ID: 40377632
Thanks Simon.  Will I also need to change the type of Redirection?  From Manual to Silent?
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Accepted Solution

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Simon Butler (Sembee) earned 500 total points
ID: 40378340
Did you change the value for redirection on the OWA virtual directory?
If so, then you should ensure that silent is enabled.

Neat write up on the process on the Exchange team blog (saves me writing it all out)
http://blogs.technet.com/b/exchange/archive/2011/12/12/owa-cross-site-silent-redirection-in-exchange-2010-sp2.aspx

Simon.
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Author Comment

by:Ben Hart
ID: 40379768
I coulda swore the redirect was silent back when we first set these servers up *cough* 4 years ago *cough*.  But it was set to Manual.  Change to Silent and tested yesterday and today.  Redirect worked and every internal/externalurl is now the new url.  I did resetiis on both servers just in case...

I now have a mailtip issue but that might be a different topic posting. Thanks Simon.
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Author Closing Comment

by:Ben Hart
ID: 40808988
Sorry it took so bloody long Simon.
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