MailEnable
- Using the MailEnable Administration program, Expand Servers|localhost|Connectors.
- Right click on the SMTP Connector and select Properties.
- Select the Smart host property sheet.
- Check Smart host Enabled.
- Enter the provided hostname of your SMTP server.
- Ensure the port number is 587.
To use the smarthost with authentication make sure you check the This Server Requires Authentication box and provide the required credentials.