Internet Direct (Indy) Version 9.0.2 Beta
TIdSMTP.AuthSchemesSupported
List of supported authentication methods for the SMTP server.

property AuthSchemesSupported: TStringList;
Description
AuthSchemesSupported is a read-only TStringList property that contains the authentication methods supported by an SMTP Mail server. AuthSchemesSupported is valid only when you are connected to the server. Set AuthenticationType to the appropriate value for an authentication scheme supported on the SMTP server.

Note: A given SMTP server can support authentication mechanisms which are not implemented in TIdSMTP.