troubleshooting Question

Exchange 2016 Migration Connection Issues

Avatar of Paul Walsh
Paul Walsh asked on
6 Comments1 Solution9 ViewsLast Modified:
Hi Experts,

In the lab I have completed an Exchange 2010 - 2016 migration ahead of doing it live in production. I setup split DNS, configured Exchange 2016, changed the DNS records to point to the new server for mail and autodiscover and I am at the point of migrating mailboxes.Using Outlook 2016, if the mailbox is on the Exchange 2010 Server, it works. If I run a Test email configuration it shows that autodiscover is on the old server. Shouldnt this show the new server? If I migrate the mailbox over to 2016, Outlook 2016 wont connect to the Exchange server and if i run the same autoconfig test, autodiscover fails. If I try to create a new mail profile, it will crash Outlook. A brand new user with new mailbox on Exchange 2016 works fine, no issues. I have migrated the arbitration mailboxes. I can ping autodiscover and it resolves to the correct IP address / NSlookup resolves correctly as well. Both basic and NTLM authentication is set on the autodiscover Virtual Directory.  OWA works fine.

Any ideas?

Join the community to see this answer!
Join our exclusive community to see this answer & millions of others.
Unlock 1 Answer and 6 Comments.
Join the Community
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 6 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros