Gets or sets the options which alter ESMTP authentication process.
An AuthenticationOptions value containing bitwise combination of flags affecting MailBee's default behavior during ESMTP authentication on the server. The default value is None (unless SafeMode is true).
If SafeMode was true to the moment of creating this SmtpServer object, AuthOptions will be set to 4 (PreferSimpleMethods).
SmtpServer Class | MailBee.SmtpMail Namespace