Register for Semperis' Hybrid Identity Protection (HIP) Conference - June 30 - July 1 Register for Semperis' Hybrid Identity Protection (HIP) Conference - June 30 - July 1

Issues with migrating from Exchange 2007 to Exchange 2013

Home Forums Messaging Software Exchange 2007 / 2010 / 2013 Issues with migrating from Exchange 2007 to Exchange 2013

Viewing 1 post (of 1 total)
  • Author

  • CCaldwell

    I’ll try to provide as much detail as possible without information overload. I have Exchange 2007 with update rollup 10 for SP3. Domain prepped successfully and Exchange 2013 installed without any issues. The first problem I ran into was the whole split DNS issue with my SSL. I got the DNS zones all sorted out and that seems to be resolved now. I moved two mailboxes to test. This is where I ran into problems.

    I cutover my firewall to the new Ex13 box to test all services before I moved any more mailboxes. OWA, ECP, and Autodiscover all work internally and externally. There were a few issues but I got them all resolved and they all work. I can successfully send outbound mail from my test mailboxes on Ex13 but I cannot get inbound mail to work at all. I have been through everything…event logs, receive connectors, queues, blah blah blah, and I can’t find anything. Ex13 by default has the receive connector configured to accept from the internet…..yet no inbound. Finally after burning up my entire weekend troubleshooting this problem I decided to hang it up for now and cut everything back over to the Ex07 server. Much to my surprise, when all of my internal DNS records were updated and my firewall was switched back to direct my smtp traffic to the old exchange server, I was able to finally get email delivered to my test mailboxes on the 2013 server!!!

    I also just read a few articles talking about coexisting servers and some things not being supported yet for Exchange 2013. Am I missing something here? Is coexistence the only way to proceed for now? Is there some silly setting somewhere that I’m completely missing? This should be a simple thing. Old server is and new Exchange server is I update all DNS records internally for autodiscover and mail to and cutover port 80, 443, and 25 traffic at the firewall to This isn’t rocket science….this should simply work…..right?!?!?!?!

    Any input would be appreciated at this point. I can’t even begin to count how many Exchange migrations I have done from 5.5 to 2000 to 2003 to 2007 to 2010….but this is my first 2013 Exchange server and it’s by far the most frustrating project/migration I’ve ever done.

Viewing 1 post (of 1 total)

You must be logged in to reply to this topic.

Register for the Hybrid Identity Protection (HIP) Europe Conference!

Hybrid Identity Protection (HIP) Europe 2021 - Virtual Conference

Mobile workforces, cloud applications, and digitalization are changing every aspect of the modern enterprise. And with radical transformation come new business risks. Hybrid Identity Protection (HIP) is the premier educational forum for identity-centric practitioners. At the inaugural HIP Europe, join your local IAM experts and Microsoft MVPs to learn all the latest from the Hybrid Identity world.