Forum Discussion
Aysani
Jan 22, 2019Copper Contributor
Adding a new domain (company acquisition) to existing Office 365 Environment
Hi, Our company ( hybrid, 600 E3 users) acquired a company ( calling it X 200 user exchange 2010) my question is when is the right time to add the domain name X.com to our office 365 environment. ...
Aysani
Jan 22, 2019Copper Contributor
Thanks Adam, so if I understand correctly you are suggesting to :
1- have a trust set up between domains
2-sync the users in X domain to O365 using Adsync
3-Add the X domain to O365
4- migrate the mailboxes to O365
will this prevent the issue that already happened?We were just trying to confirm the ownership of the x.com in O365 and we weren't able to send emails out to x.com anymore.
Thank you
Jan 22, 2019
Hi! If you’re just trying to accomplish the latter see @Vasils post!
Otherwise I suggest you find a third party migration tool, there’s a few great ones and do a migration! First before changing the domain and dns! That way the users work as usual and have their mailflow the same! You don’t necessarily need to migrate the users, but rather create the users in your tenant then match their accounts with their mailboxes!
It all depends on your exact scenario
Adam
Otherwise I suggest you find a third party migration tool, there’s a few great ones and do a migration! First before changing the domain and dns! That way the users work as usual and have their mailflow the same! You don’t necessarily need to migrate the users, but rather create the users in your tenant then match their accounts with their mailboxes!
It all depends on your exact scenario
Adam