How to block exchange active synce on personal cell phones

Hi,
  How you do block users from using Exchange Active Sync to access e-mail on their personal cell phones but allow company owned devices to access do it?
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masterofallAsked:
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Alan HardistyConnect With a Mentor Co-OwnerCommented:
You can achieve this using the built-in Allow/Block/Quarantine option:

http://blogs.technet.com/b/exchange/archive/2010/11/15/3411539.aspx

When a device attempts to gain access it can be quarantined until approved or denied, thus you get the ability to block and allow the devices you want.

You may have to remove all Activesync devices after setting this up so that everyone has to go through the ABQ process.

Alan
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NICK SConnect With a Mentor Commented:
Allow block quarantine is best option , but most simple method would be to enable active sync using below command

Set-CASMailbox -Identity: "username" -ActiveSyncAllowedDeviceIDs: "<DeviceID_1>"

this will allow only device which is in allow list , you can also add multiple device IDs if you want
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Minecraft_ EndermanCommented:
1. Retrieve the device ID after the user has synchronized the device with the Exchange server.

Get-ActiveSyncDeviceStatistics -Mailbox:"<EmailAlias>" |fl DeviceID

2. Prevent that device from synchronizing with Microsoft Exchange.

Set-CASMailbox -Identity: "EmailAlias"
-ActiveSyncBlockedDeviceIDs: "<DeviceID_1>","<DeviceID_2>"

3. Enable a Device for Exchange ActiveSync

Set-CASMailbox -Identity: "EmailAlias" -ActiveSyncAllowedDeviceIDs: "<DeviceID_1>","<DeviceID_2>"
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masterofallAuthor Commented:
Kiss
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