I have recently started doing some migrations from a hosted exchange 2007 server onto office 365 and have ran into some issues.
Since we have alot of users still using the hosted exchange (slowly moving users over 1 by 1 to 365) I have not fully turned off the local server and therefore had some issues with the autodiscover when setting up my email in outlook 2013.
I instead used the domain and email given to me by microsoft (the <user>@<name>.onmicrosoft.com) This at the least allowed me to be able to add my user and sync my email, but it presented me with another issue. Outlook and now lync ask me for credentials every few mins. I can cancel the password prompt and give it a few then it will start syncing again.
After some research i found that it may be my internal DNS preventing seamless communication. I added the CNAME and SRV records to my local server and the issue still presents itself.
Anyone run into this issue and have a resolution? I have tried killing my local credentials on the machine im using outlook on just in case, and verified with all the proper office tools that the autodiscover service is working. I have synced up my phone in seconds with no issues as well.
Any input would be great!
Thanks!