Mac OS X Server, 10.4 and Later - Locking Down the Server

Mac OS X Server 10.4 or later can be locked down to only accept email from the MailRoute servers by following these steps:

  1. In Server Admin, select Mail in the Computer & Services pane
  2. Click Settings
  3. Select the Relay tab
  4. Check Accept SMTP relays only from these:
  5. Edit the list of hosts:
    • Click the Add (+) button to add a host to the list:

For more information about configuring Mac OS X server, please see


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