Office 365 Bug in Mac Mail

[Parikh12345]

So I moved from rackspace exchange to office 365 last weekend. Everything seemed to be fine but all the sudden mac mail cant connect to office 365. Whats strange is that in the logs its trying to connect to the old rackspace server mex08.emailsrvr.com (I can see this through the connection doctor logs).
I tried rebuilding everything Envelope index, deleting mail in the library, readding the account, etc etc. I have another exchange account in mail thats working perfectly. I flushed the DNS on my mac, etc etc. I see no way of trying to point mail back to office 365. Any ideas?

 

[BrianBaughn]

Did you add the O365 account "automatically" or did you enter the credentials manually?

 

[Parikh12345]

Did you add the O365 account "automatically" or did you enter the credentials manually?

Yes, It added and downloaded all the messages. It just randomly decided to switch over last night for no reason.

I wonder if it has something to do with the DNS records that this hotel I am at is using....

Although I did try a VPN and it didnt work.

 

[BrianBaughn]

It downloaded the messages that were at Office 365? How did you move all the mail over from Rackspace to O365?

What are the DNS settings on your Mac?

 

[Parikh12345]

Seems like an autodiscover / DNS issue. Im back home and everything works perfectly. Thanks for your help everyone!