SmarterMail 15.x Help
This documentation is for a product that is no longer supported by SmarterTools.

Reserved Domain Names

System administrators can prevent certain domains names from being added to SmarterMail. For example, domains that are already used for free email services, like or, are ideal additions to the reserve list as allowing administrators to add such domains to SmarterMail could affect message delivery. Similarly, domains that are traditionally reserved for testing and documentation, such as or are also ideal candidates for the reserve list.

To view a list of reserved domains, click the security icon and expand the Advanced Settings folder in the navigation pane. Then click Reserved Domain Names. A list of reserved domains will load in the content pane and the following options will be available from the content pane toolbar:

  • New - Adds a domain to the reserve list.
  • Edit - Edits the selected domain.
  • Delete - Deletes the selected domain(s) from the reserve list.