Kerio Connect - Configuring SmartHost or Outbound Service

  1. Make sure you've signed up with MailRoute for Outbound Services! This optional service has to be configured by us first or we won't accept any email from your mailserver.
  2. Login to your Kerio Connect admin interface.
  3. Expand Configuration, and click on SMTP Server, and then the SMTP Delivery tab.
  4. Click Add.
  5. Type a description for the server.
  6. To use only a single SMTP server to send messages, select Always use this relay server.
  7. Select the use relay SMTP server radio button.
  8. Define a rule for the sender or recipient. Check Enable Rule box. 
  9. Relay server hostname:
  10. Relay server port: 25
  11. Be sure Relay server requires authentication is NOT checked.
  12. Click OK.
  13. Click Apply.


  1. Check the Use SSL/TLS if supported by remote SMTP server checkbox.

Please see the instructions here for SSL/TLS:

The changes you've made should take effect without having to restart any services.


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