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Send connector to 2003 problem

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Send connector to 2003 problem - 27.Feb.2009 12:11:14 PM   


Posts: 4
Joined: 25.Feb.2009
Status: offline
Problem: Mail queued as unreachable domain with error "no route to mailbox database" on exch2007 server when sending mail to exch2003 server.
server setup is:
An exchange organisation with three administrative groups.
Exchange administrative group containing 2007ex server
Site A containing 2003exa server
Site B containing 2003exb server

server 2003exa is in the root domain along with server 2007ex
server 2003exb is in a child domain
all servers are DC's
Mail flow works as follows:
2003exa to 2003exb ok
2003exa to 2007ex ok
2003exb to 2003exa ok
2003exb to 2007ex ok
2007ex to 2003exa ok
No mail flow  2007ex>2003exb
Tested SMTP connection from 2007ex to 2003exb and this works ok
Send connectors created using cmdlet as recommended. tried manually creating additional send connector but does not work.  At a bit of a dead end as have tried everything I can find to trace problem.
Post #: 1
RE: Send connector to 2003 problem - 27.Feb.2009 12:49:22 PM   
Elan Shudnow


Posts: 897
Joined: 4.Jan.2007
From: Chicago, IL
Status: offline
An important thing to understand with Exchange 2007 is that it does not have link state routing.  So if you have multiple Exchange 2003 routing groups, you'll want to turn link state routing off of your Exchange 2003 servers via the registry and you can use the following command to create a bi-directional connector between an Exchange 2003 bridgehead server in that specific Exchange 2003 Routing Group:
New-RoutingGroupConnector -Name "Connector Name" -SourceTransportServers "Exchange2007SMTPBridgehead" -TargetTransportServers "Exchange2003SMTPBridgehead"  -Bidirectional $true -PublicFolderReferralsEnabled $true

The big reason you'd want to do this is because Exchange 2007 servers are all in the same Routing Group. So if you have an Exchange 2007 server in lets say Chicago and the same for an Exchange 2003 server, you'll want to create the bi-directional connector between those 2 local servers so you ensure routing is properly defined between those 2 local servers.

A great article I read when i first started learning about how to properly define routing between Exchange 2007 and Exchange 2003 with multiple routing groups in different locations is located here:


Elan Shudnow
Exchange MVP

(in reply to ProphetPlc)
Post #: 2

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