Issue:
Out-Of-Office (OOF) is not being sent.
(also you see
event id 3004 in the application log of Exchange mailbox Server:
The Rules quota
of mailbox XXX has been reached and the automatic reply rules can't be enabled
or updated. Delete some existing rules or increase the user's rule quota and
try to set the automatic reply again. You can use the Set-Mailbox cmdlet to
increase a user's rules quota.)
Resolution:
Increase the
user rules quota:
Get-mailbox XXX
| select rulesquota
Set-mailbox XXX
–RulesQuota 128KB