Routing error

I have this message in the exchange event log. The old 2003 server has long been decomissioned and no routing groups are listed.

Log Name:      Application
Source:        MSExchangeTransport
Date:          11/27/2012 3:43:11 PM
Event ID:      5020
Task Category: Routing
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      Exch2K10.domain.com
Description:
The topology doesn't contain a route to Exchange 2000 Server or Exchange Server 2003 cbtmail.community.com in Routing Group CN=First Routing Group,CN=Routing Groups,CN=First Administrative Group,CN=Administrative Groups,CN=Community Bank,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=community,DC=com in routing tables with the timestamp 11/27/2012 9:43:11 PM.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="MSExchangeTransport" />
    <EventID Qualifiers="32772">5020</EventID>
    <Level>3</Level>
    <Task>4</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2012-11-27T21:43:11.000000000Z" />
    <EventRecordID>103543</EventRecordID>
    <Channel>Application</Channel>
    <Computer>Exch2K10.domain.com</Computer>
    <Security />
  </System>
  <EventData>
    <Data>cbtmail.domain.com</Data>
    <Data>CN=First Routing Group,CN=Routing Groups,CN=First Administrative Group,CN=Administrative Groups,CN=Community Bank,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=community,DC=com</Data>
    <Data>11/27/2012 9:43:11 PM</Data>
  </EventData>
</Event>

MCP