For 2007, 2010, and 2013 Exchange servers, Exinda recommends that encryption of the MAPI protocol should be disabled to maximize reduction, as each user will encrypt files with a different key. You must disable encryption on all Microsoft Outlook clients as well as the Exchange server to maximize the benefit. See Turn off MAPI encryption in Microsoft Outlook
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Note Encryption cannot be disabled on Exchange 2003 servers, but it will not enforce a policy requiring encrypted communications between Exchange and Outlook. |
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Turn off encryption on Exchange 2007 servers
- Open the Exchange Management Shell.
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At the command prompt, type the following command:
Set-MailboxServer <ExchangeServerName> -MAPIEncryptionRequired:$false
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To verify the change to the encryption status, type the following command:
Get-MailboxServer <ExchangeServerName>
Turn off encryption on Exchange 2010 and 2013 servers
- Open the Exchange Management Shell.
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At the command prompt, type the following command:
Set-RpcClientAccess -Server <ExchangeServerName> -EncryptionRequired $false
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To verify the change to the encryption status, type the following command:
Get-RpcClientAccess -Server <ExchangeServerName>