An Address List has an invalid Filter Rule (purportedSearch). No directory entries will belong to this Address List until you correct this problem.
Microsoft.Exchange2007.Mailbox.MSExchangeAL.8326 (Rule)
Knowledge Base article:
Element properties:
Member Modules:
Source Code:
<Rule ID="Microsoft.Exchange2007.Mailbox.MSExchangeAL.8326" Enabled="onEssentialMonitoring" Target="ExLibrary!Microsoft.Exchange2007.ServerRole.Mailbox" ConfirmDelivery="true" Remotable="true" Priority="Normal" DiscardLevel="100">
<Category>EventCollection</Category>
<DataSources>
<DataSource ID="DS" TypeID="ExDiscovery!Microsoft.Exchange2007.Application.FilteredEventProvider.DS">
<EventSourceName>MSExchangeAL</EventSourceName>
<EventDisplayNumber>8326</EventDisplayNumber>
</DataSource>
</DataSources>
<WriteActions>
<WriteAction ID="GenerateAlert" TypeID="Health!System.Health.GenerateAlert">
<Priority>1</Priority>
<Severity>1</Severity>
<AlertOwner>$Data/PublisherName$</AlertOwner>
<AlertMessageId>$MPElement[Name="Microsoft.Exchange2007.Mailbox.MSExchangeAL.8326.AlertMessage"]$</AlertMessageId>
<AlertParameters>
<AlertParameter1>$Data/EventDescription$</AlertParameter1>
</AlertParameters>
<Suppression>
<SuppressionValue/>
</Suppression>
</WriteAction>
</WriteActions>
</Rule>