HI, Everyone,
I should migrate 600 user's mailboxes to office 365 from gsuite using this guide, so we made a plan changing mx record after sync and migration completes, but we have some changes to change mx record to o365 during migration, so I have some questions about that.
If we see that guide, it describes to make routing domain and alias both o365 and gsuite, I have questions about that routing domain function, does it only have delivering message when original mail server receive or send new mails for external, right? I hope gsuite oringal mail migration works with service account and json, etc which were created in gsuite side, so let me have question about routing domain and alias when that function works.
If I make new mailbox after create new users with set license, which type of cmdlet do I use it? Customer will have plan to make active directory server in on-premise with azure ad connect server after mail migration to o365, if we have active directory server and azure ad connect server, it looks recommends to use new-msoluser cmdlet, but we should provision users manually, so if I make new users to make mailboxes, do I make new-mailuser cmdlet, which is correcct? And I've already mentioned before, if we change mx record during migration, which type of cmdlet do I use to make mailboxs? When it make new user using new-mailuser cmdlet, we will set licesne.