Only use fallback domain for Office 365 for business

Copper Contributor

Hi all,


I have added a domain to Office 365 for business. However, then I realized that all IMAP mailboxes at the provider do not work anymore, so I removed the domain from Office 365 in the Admin Center.


Now I have only the fallback domain in Office 365. Is this good enough to run Office 365 or is this for any reason not a good idea?






1 Reply
Depends on how you want to use it. There is no requirement to use a custom domain, especially if you don't want to move your mailboxes to O365.