Server name

Specifies the domain name or IP address of the SMTP server. If the connection to the server should use a different port than 25, please include it in the name.

Enter localhost if you wish to use the server provided by your local machine.

Username

If the SMTP server requires authentication, you can enter the user name here.

Password

If the SMTP server requires authentication, you can enter the password here.

Use SSL

Indicates if the SMTP connection to the server should be secured by SSL. The server must be configured to use SSL in order for this to work.

Priority

When an e‑mail (or batch of e‑mails) needs to be sent out, the system checks the SMTP servers in the order of their priority and uses the first one that is available. As a result, servers with a higher priority will receive a greater e‑mail load.

The server with the highest priority for each website is the default SMTP server configured in Site Manager -> Settings -> System -> E‑mails. If this server is busy or undefined, the e‑mail checks for any available server with the High priority, then Normal and finally Low.

Enabled

Can be used to manually disable or enable the server (within the context of Kentico CMS). A disabled server will be skipped when outgoing e‑mails check for available servers.