Problem

Error,

"Unable to edit the specified E-mail address policy. E-mail address policies created with legacy versions of Exchange must be upgraded using the 'Set-EmailAddressPolicy' task, with the Exchange 2007 Recipient Filter specified.":

Caused because the policy in use was created on Exchange 2000/2003

Solution

1. Logon to the Exchange server.
2. Start > All Programs > Microsoft Exchange Server 2007 > Exchange Management Shell.
3. Issue the following command.
Set-EmailAddressPolicy "Default Policy" -IncludedRecipients AllRecipients
4. Confirm with Y {Enter}.

e.g.
[PS] C:\Users\administrator.domain\Desktop>Set-EmailAddressPolicy "Default Policy"
-IncludedRecipients AllRecipients

Confirm
To save changes on object "Default Policy", the object must be upgraded to the
current Exchange version. After the upgrade, this object cannot be managed by a
previous version of Exchange System Manager. Do you want to continue to
upgrade and save the object?
[Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help
(default is "Y"):Y
[PS] C:\Users\administrator.domain\Desktop>