Unable to find the routing information for the site in the gateway address routing table.

Unable_to_find_the_routing_information_for_the_site_in_the_gateway_address_routing_table (Rule)

Knowledge Base article:

Summary

The message transfer agent (MTA) in Exchange uses a (DLL) to access the routing information that the Microsoft Exchange Routing Engine calculates.

Resolutions

Stop and start the Microsoft Exchange Routing Engine.

External

For more information about MSExchangeMTA event 169, see:

Element properties:

TargetMicrosoft.Exchange.Routing.MTA
CategoryEventCollection
EnabledTrue
Event_ID169
Event SourceMSExchangeMTA
Alert GenerateTrue
Alert SeverityWarning
Alert PriorityNormal
RemotableTrue
Alert Message
Unable to find the routing information for the site in the gateway address routing table.
{0}
Event LogApplication

Member Modules:

ID Module Type TypeId RunAs 
EventDS DataSource Microsoft.Windows.EventProvider Default
GenerateAlert WriteAction System.Health.GenerateAlert Default

Source Code:

<Rule ID="Unable_to_find_the_routing_information_for_the_site_in_the_gateway_address_routing_table" Enabled="onEssentialMonitoring" Target="Exch2003Core!Microsoft.Exchange.Routing.MTA" ConfirmDelivery="false" Remotable="true" Priority="Normal" DiscardLevel="100">
<Category>EventCollection</Category>
<DataSources>
<DataSource ID="EventDS" TypeID="Windows!Microsoft.Windows.EventProvider">
<ComputerName>$Target/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>
<LogName>Application</LogName>
<Expression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery>Channel</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value>Application</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery>PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value>MSExchangeMTA</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery>EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value>169</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</Expression>
</DataSource>
</DataSources>
<WriteActions>
<WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">
<Priority>1</Priority>
<Severity>1</Severity>
<AlertOwner>$Data/PublisherName$</AlertOwner>
<AlertMessageId>$MPElement[Name="Unable_to_find_the_routing_information_for_the_site_in_the_gateway_address_routing_table.AlertMessage"]$</AlertMessageId>
<AlertParameters>
<AlertParameter1>$Data/EventDescription$</AlertParameter1>
</AlertParameters>
<Suppression>
<SuppressionValue/>
</Suppression>
</WriteAction>
</WriteActions>
</Rule>