Enabling a split domain allows you to receive your mail in two locations. When you enable the Split Domain option, the Exchange server will use the MX record for this domain to determine where to send mail for email addresses that do not have a valid mailbox on the Exchange server.

This is particularly useful for organizations that:

  • Plan to migrate users to Smarsh Hosted Services's Exchange environment over a period of time, instead of all at once, or
  • Have only a partial number of users that require an Exchange email environment, while POP email is sufficient for others.

Important:

  • Before enabling the split domain option, make sure that your domain's MX record does not point to your hosted Exchange Server with Smarsh Hosted Services, as this will cause messages to bounce. Read the Knowledge Base article on What is an MX record? What is the correct syntax for MX records? for information about the MX record.
  • Only account owners can split the domain. For more information on account owners, read the following Knowledge Base articles:
    Account Contacts and Contact Roles

To set up the split domain option for a domain:

  1. Login to your CONTROL PANEL and navigate to Services > Domains
    Domain Names
  2. The icon to the left of the domain name shows you whether the domain is split.

     
    • No icon (primary-exchange-domain.com, exchange.test): If there is no icon, it means the split domain option is not enabled for the domain.
    •   (exampledomain.net): You will see this icon if the domain is split with a mail server that is not hosted by Smarsh Hosted Services.
    •  (testweb.test): You will see this icon if the domain is split with a Web Hosting account.
  3. To enable a split domain or change split domain options, click the domain name link, then go to the Split tab.
  4. On the Split tab, choose one of the options:
    • A mail server not hosted by Smarsh Hosted Services
      Select this option if you want to split the domain between the Smarsh Hosted Services Exchange server and your local mail server (outside of Smarsh Hosted Services). If you are using this option, please make sure you do the following: 
      • Contact your DNS hosting provider or third-party spam filtering service to make sure that your domain’s MX records are pointing to your external mail server and not to your Smarsh Hosted Services Exchange server.
      • Set up forwarding for all mailboxes on your external mail server to the default domain name alias (i.e. user@account.serverdata.net).
        Read the Knowledge Base article on What is the username.msoutlookonline.net or username.serverdata.net domain? for more information.
    • Split domain not necessary
      Choose this option if the split option has already been enabled for this domain, but you do not have users on an external server anymore.
  5. Click Save Changes.