Internet Direct (Indy) Version 9.0.2 Beta
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function Authenticate: Boolean; virtual;
You must specify the AuthenticationType before calling the Authenticate method. Authenticate should be called only once for a SMTP session.
Send will also call Authenticate before transmission of an E-Mail message, if the SMTP session has not been authenticated.
When AuthenticationType is atLogin, Authenticate sends the SMTP AUTH LOGIN command followed by the Base64-encoded values for Username and Password to the server.