Replication issues between Exchange 2003 and Exchange 2007

Posted on 2009-06-29
Last Modified: 2012-05-07
I am trying to migrate a single Exchange 2003 server to Exchange 2007.  Exchange 2007 is installed on windows 2008 x64.  

I can send messages from exchange 2007 mailboxes however I can not receive any messages from the exchange 2003 server.   The Exchange 2003 routing group connector queue shows all the messages.  I have tired to delete and recreate the routing group connector.  

Public folder replication is also not working.

Question by:ltrcne
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
LVL 65

Accepted Solution

Mestha earned 500 total points
ID: 24739660
That usually means something is interfering with the traffic.
It can also mean a smart host set on the SMTP virtual server.

Ensure the servers can see each other and telnet to port 25 on IP address, NETBIOS name and FQDN.
Verify that you haven't set the FQDN on the SMTP virtual server the same FQDN on the Connectors on the Exchange 2007 server.

If you can see the messages in the queues, what does the error message say?


Author Comment

ID: 24739961
I just verified I can telnet to port 25 to all names in both directions.

I checked the FQDN names and they were different however the SMTP virtural server only had so I changed it to  Is this correct?

I do not see any error messages in the queue.  Messages sent from a 2003 mailbox to a 2007 mailbox only show as "queued" and eventually time out.
LVL 65

Expert Comment

ID: 24740751
When you click on the queue there should be a message displayed at the bottom of the queue viewer.
Changing the FQDN wasn't really a problem, as long as they didn't clash.

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.


Author Comment

ID: 24741051
The error message shows "The connection was dropped by the remote host"
LVL 65

Expert Comment

ID: 24746646
Have you checked that there isn't a smart host configured on the SMTP virtual server as I had stated in an earlier post?


Author Comment

ID: 24747104
Ok, I do see now that I have the smart host configured to send via our outside anti-spam/virus providor.  By removing the smart host setting mail flows correctly between the two servers.  

Our SaaS provider indicates we should modify the MTA routing to allow outbound messages to be filtered by their servers.   Should this entry be made somewhere other than the smart host?

Thank you for your help.

Author Closing Comment

ID: 31598077
I got it now.  The correct settings are already in the SMTP connector and by removing the settings from the SMTP Virtual Server smart host mail flow is working correctly.

Thanks again.

Featured Post

Office 365 Training for Admins - 7 Day Trial

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Scam emails are a huge burden for many businesses. Spotting one is not always easy. Follow our tips to identify if an email you receive is a scam.
Read this checklist to learn more about the 15 things you should never include in an email signature.
In this video we show how to create a Contact in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Contact ta…
how to add IIS SMTP to handle application/Scanner relays into office 365.

751 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question