package org.subethamail.smtp.client; import java.io.IOException; /** * An Authenticator is called by SmartClient after the initial EHLO command and * negotiates the authentication of the user for example by issuing the SMTP * AUTH command to the server. * * @see <a href="http://tools.ietf.org/html/rfc4954">RFC 4954: SMTP Service * Extension for Authentication</a> */ public interface Authenticator { void authenticate() throws SMTPException, AuthenticationNotSupportedException, IOException; }