There is a workaround, but we recommend employing it only if you already have experience with creating subdomains at 1&1 Internet.
If despite this service limitation you choose to manage your own Office 365 DNS records at 1&1 Internet, follow the steps in this article to verify your domain and to set up DNS records for email, Skype for Business Online, and so on. Follow the steps below or watch the video(Need more help?
Your ability to log in to your account at your domain registrar and create the DNS record proves to Office 365 that you own the domain.
If the domain is not currently set to use the 1&1 name servers, you will not be able to change the IP address within the 1&1 Control Panel.
You will need to update the IP address with your current DNS host.
I’ve additionally made the program so that it takes the three fields mentioned above as parameters.
You can put this into Windows XP’s scheduler and every 15 minutes, it will check the current IP and update as needed. This of course means your password will be put into your scheduler, but you have the source code, you can add encryption if that is a concern on your PC.
Back to top 1&1 Internet requires a workaround so that you can use an MX record together with the CNAME records that are required for Office 365 email services.