Hello, I recently added another domain to my office 365 account for a new group of people and I've made the necessary changes with GoDaddy and on the 365 portal. Lync signin works perfectly fine outside of my organization, but users on 2013 Lync cannot signin internally. They receive a DNS error. What's odd is that all Lync 2010 clients work fine internally and externally. Here is the log error from one of the 2013 clients:
1 Login: FAIL (hr = 0x80ee0066)
signin to server=sipinternal.companyname.com, internal
VerifyOnEnableEvent result return 10
ACTION: SERVER NOT REACHABLE
NO MORE SERVER TO TRY
ACTION : PERMANENT ERROR
Another odd thing is that if I right-click Lync 2013 and select run as with new credentials and I use the local admin credentials of the PC, it works. All of my users are local admins to their PC.
I have a ticket open with MS, but they're not making much progress. My current 365 domain works fine, so I don't think it could be a major internal DNS issue. Any help would be greatly appreciated.