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Exchange 2010 Mail Queues between 2x Sites

Hi.

I have an exchange 2010 setup within 2 sites. Both sites have 1xEdge, 1xHub/CAS and 1xMail.

I have them setup with DAG so it will failover to site 2 if there is an issue at site 1.

The error I get is that the mailflow is getting stuck at the HUB level. Please see screenshot.

So with the servers off at site 1 (COL) when it fails over to site 2 (BRT) the clients can open outlook fine with the connectors pointing to the correct site hub server but mailflow is either sitting in shadow redundancy or smtp relay queues.

As soon as I turn on the hub server on site 1, with the databases on site 2 everything works fine.

Any Ideas.

Thanks

Simon Butler (Sembee)

Shadow Redundancy is expected - that is basically a queue the email will stay in until the remote server confirms that it has received the messages correctly.

Are the two servers in separate AD sites? Does mail flow between them normally ok?

Simon.

Colchester_Institute

ASKER

Hi Simon thanks for the reply,

The servers are in different sites, but they are part of the same domain. Mail flow works if both the hub servers are on, but as soon as I turn off the site 1 hub it stops.

I have been researching and found that the mailbox in question is a legacy 2003 one. So I think the routing groups might be the culprit.

Is there a way to specify 2x hub servers with the command below as currently there are 2 routing groups and it looks like it is defaulting to the site 1 hub only.

New-RoutingGroupConnector -Name “Exchange RGC” -SourceTransportServers “Ex2010Hub1.contoso.com” -TargetTransportServers “Ex2003BH1.contoso.com” -Cost 10 -Bidirectional $true -PublicFolderReferralsEnabled $true.

ASKER CERTIFIED SOLUTION

Simon Butler (Sembee)

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Colchester_Institute

ASKER

many thanks