Note: Typically it takes about 15 minutes for DNS changes to take effect.You'll see that 'MX' is the default record check, though you could change that to 'A' if you want.Alternatively, you can install the tools on a member server to run Exchange 2013 Active Directory preparation.For Windows Server 2008 R2 (SP1 or later), in Power Shell run: For other Active Directory preparation scenarios, such as multiple forests or multiple domains, refer to this article on Tech Net.From the location where you have stored your Exchange 2013 files run The first dialog gives you the opportunity to check for updates to the setup files before you proceed.Mail servers send and receive email messages on the Internet. Warning: You cannot set up your domain name to use more than one mail provider at a time.MX (Mail Exchanger) records specify and prioritize the incoming mail servers that receive email messages sent to your domain name. Sometimes you have to update them if you host a website with one network (such as ours) but you have email hosted in another. If you have an email account through another email provider and change your MX record to point to our mail servers, you'll lose access to your original email account.
For example, use 0 for your mail routing record, and 10 for the record for validating that you own your domain.After installing the pre-requisites a restart of the server may be required.If you proceed without restarting then setup may be unable to proceed when it detects the pending restart.Note: If your domain is registered at another company, see the Domains registered at another company section below for instructions. If you log in above (under ), we can save you a couple of steps.Contributors: Check the Domains FAQ if you don't find what you're looking for. To learn about webhosting and DNS for websites with Office 365, see Use a public website with Office 365.Now that you've added the record at your domain registrar's site, you'll go back to Office 365 and request Office 365 to look for the record.