Find and fix issues after adding your domain or DNS records in Office 365
Setting up your domain to work with Office 365 can be challenging. The DNS system is nitpicky to work with, and the DNS setup for your domain affects important business activities, like email! But we can help you fix issues with your domain's DNS setup. The domains troubleshooter will show you any records that need fixing, and exactly how to fix them. Just want someone to help you? See support options.
Note Got your DNS set up correctly, but mail doesn't work in Outlook on your desktop? Fix Outlook problems
If you’ve run into problems after adding your domain, start by making sure that the DNS records for your custom domain are set up correctly by checking the domain in your account in Office 365:
Sign in to Office 365 with your work or school account.
Go the Manage domains page.
Choose the domain that you're working with, and then, on the right side, choose Find and fix issues. If any DNS records are set up incorrectly for Office 365, the domains troubleshooter will identify them and show you the correct entries you should use.
If you've fixed any DNS issues and you're still having trouble, try one of the following.