DNS / Email migration from OVH (Exchange) to Office 365

· 3 min read
DNS / Email migration from OVH (Exchange) to Office 365
Photo by Davide Baraldi / Unsplash

My personal emails were hosted by OVH in their Exchange services since 2003 and this service didn't really evolve that much for the price I have to pay every month.

So I decided to move from OVH to Office 365 and this has been my first time so I documented it, it can maybe be useful for someone.

You need to have the Office 365 admin website :

you also need to have your OVH manager webpage opened :

First in the Office 365 admincenter page, go to Settings / Domains and click Add Domain

Add you domain in the form

Then follow the process and chose the option suitable your usage.

In the OVH manager, create the TXT entry as requested on the Office 65 admincenter

Chose TXT field

Enter the values you got in the Office 365 admincenter

Once it's done go back to the Office 365 admincenter and click on more option

I chose the second option because I wanted to check it worked, and it did !

I didn't need the Skype for Business and Device Management as I just need the email services

I chose to import the DNS entries from OVH

Next these are the DNS informations needed to be changed in OVH

I had to modify in text mode

and change the DNS servers by the Microsoft ones

As I had DNS Sec enable, I have this error that stopped me to continue, once disabled I had to wait 6 hours before being able to move on and finish the process.

Here you go. Now you just need to create a new user with the right UPN to enable the mailbox.