Using the SMTP_AUTH authentication service
SMTP_AUTH is an authentication service that enables itinerant users to send mails from anywhere using their domain mail server. SMTP is short for Simple Mail Transfer Protocol, while AUTH is short for Authentication.
Note: You must configure your mail client to enable SMTP_AUTH authentication. For more information about configuring your email client, see the program's documentation.
To use SMTP_AUTH, you must configure your mail client to send the authentication user name and password to the domain mail server. You must select the SMTP_AUTH tag (this will depend on the email client you are using) and provide the required user name and password whenever you need to send mail.