OALGen skipped some entries in the offline address list
Change log level, to see were the error happens.
Most of the time, it is an error in the smtp address or an user without an email address.
(user included in address book but having no email).
Set-EventLogLevel “Exch1\MSExchangeSA\OAL Generator” -level high
Set-EventLogLevel “Exch1\MSExchangeSA\OAL Generator” -level lowest
