I am currently running a hybrid setup between my onpremises Exchange server 2007 and Office 365. I have migrated almost all of our users to the cloud. Our MX is still pointing to our onpremises Exchange.
Our ISP has configured all of DNS entries needed, including the Autodiscover entry which is the following: CNAME - autodiscover autodiscover.outlook.com 1 Hour
Email flow seems to be working properly, but in some of my Outlook clients on computers in my network I am getting the following prompt:
"Allow this website to configure user@domain server settings"
Your account was redirected to this website for settings
Allow or Cancel"
Of what I understand this says that the autodiscover is redirecting to my OnPremises Exchange server for settings and not to the autodiscover.oulook.com, which is the office 365 one.
I do not know if I am missing something on my internal DNS.
Can someone enlighten me on what's happening?
Also if someone can explain how autodiscover works on my situation I will appreciate it.
Now I am kind of confused on how autodiscover works.