procedure Login(const Command, Host, Protocol: string;
const OkReplies, ContinueReplies: array of integer; Client: TScSMTPClient;
Capabilities: TStrings; const AuthType: string = 'AUTH';
IsInitialResponseSupport: boolean = True);
Authenticates the client to the SASL server.
This method iterates over Items and checks if a given mechanism is ready to start the authentication process. If a mechanism is ready, a login attempt is made using this mechanism.