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CityofSpringfieldMA

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Exchange 2010 sp2 r5 ActiveSync fails on iPhones for non-internet facing CAS

I have 2 CAS server, the internet facing CAS iPones are able to sync with Exchange but the non-internet facing Exchange are erroring with "Error: [System.Net.WebException]: The remote server returned an error: (403) Forbidden." when I run test-activesyncconnectivity.  The policy for activesync is set to "allow non-provisionable devices".  This started after I ran the digicert  tool to point the activesync to my external domain name. This is the current setting:

[PS] C:\>get-activesyncvirtualdirectory -server exchserver | fl internalurl,externalurl

InternalUrl : https://email.externaldomain.com/Microsoft-Server-ActiveSync
ExternalUrl :
Anyone have any ideas on how to fix?
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Amit
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Why you need non internet facing server to work with Iphone...everyone should come from internet facing server...
Iphone would only work with Internet facing device as all devices connect through Internet

- Rancy
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CityofSpringfieldMA

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when I reset back to the internal server name the iphones start working.

[PS] C:\>get-activesyncvirtualdirectory -server exchserver | fl internalurl,externalurl

InternalUrl : https://exch-non-internetfacing.internal.lan/Microsoft-Server-ActiveSync
ExternalUrl :
What am I doing wrong?
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Amit
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