We're setting up a new O365 tenant, migrating an existing email domain to O365.
To pre-stage accounts, we need to verify ownership of the domain.
Can we verify ownership of domain with TXT file or code for O365 but leave the MX record in place with the current DNS provider? That way, we can add accounts ahead of time but leave mail uninterrupted until we are ready to change MX over?
Thanks in advance!