exchange 2007: external out-of-office messages
first, to allow external Oof messages they’ll have to be allowed globally at:
EMC Organization Configuration->Hub Transport->Remote Domains->Right-click on Default and choose Properties
then choose “Allow external out-of-office messages only”
^the above change did not seem to take effect until both hub transport servers had been rebooted
powershell script:
Get-Mailbox -ResultSize Unlimited | where {$_.ExternalOofOptions -eq “External”} | Set-Mailbox -ExternalOofOptions InternalOnly
Set-Mailbox -Identity user1 -ExternalOofOptions External
Set-Mailbox -Identity user2 -ExternalOofOptions External
to verify settings run:
Get-Mailbox user1 | Select Name, ExternalOofOptions
some info here:
http://exchangepedia.com/blog/2008/07/controlling-oofs.html