Do I need a SAN Certificate for OWA/Active Sync to work in Exchagne 2010?

I am migrating from exchange 2003 to exchange 2010.  
During the Install of the Client Access Role, setup asks me, "Will the Client Access Server Role be internet facing"  I checked the box, since I want users to be able to use OWA and Active Sync.  I was reading a few articles and I'm confused about if I need a SAN Certificate.  I will not be using oulook anywhere, just OWA and Active Sync.  I was reading an article that said I needed a SAN cerificate for OWA/Active Sync to work,  is this correct?  Any assistance would be greatly appreciated.  Thanks.
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Crossroads305Asked:
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Shreedhar EtteCommented:
Yes, you need SAN certificate. Its better to have it.

Hope this helps,
Shree
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Shreedhar EtteCommented:
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Crossroads305Author Commented:
Thanks.  Will OWA/Active Sync work without a SAN Certificate?
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Crossroads305Author Commented:
Could I change the address from https://mail.outlook.com/owa to http://mail.outlook.com/owa?
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Shreedhar EtteCommented:
you can by disabling the SSL on the OWA
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Crossroads305Author Commented:
Where do I go in exchange 2010 OWA to disable SSL? Thanks
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Hilal1924Commented:
Here is how you disable SSL in OWA 2007
Go to is on the owa server
Choose the properties of the default web site
Choose the directory security tab
Choose the edit button under the heading "secure communication"
Remove the check for "require secure channel (SSL)
Hilal
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Shreedhar EtteCommented:
Hi,

Refer this:
http://technet.microsoft.com/en-us/library/aa998359.aspx

Hop this helps,
Shree
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Crossroads305Author Commented:
Thanks.  So Exchange 2010 doesn't requite I use SSL for OWA/Active Sync correct?  Right now my exchange 2003 server isn't using SSL for OWA/Active Sync.  My OWA for exchange 2003 is (http://mail.domain.com).  So OWA for Exch2010 can go over port 80 as well, if I disable SSL rightt?   Exchange 2003 and Exchange 2010 will have to coexist on my network for a few weeks.  Is there anything special I have to do for this coexistance.  THanks
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Crossroads305Author Commented:
thanks
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