Net::SMTP_auth - Simple Mail Transfer Protocol Client with AUTHentication

       Alex Pleiner <alex@zeitform.de>, zeitform Internet Dienste.  Thanks to Graham Barr <gbarr@pobox.com>  for
       Net::SMTP.  NTLM authentication code provided by James Fryman <jfryman@gmail.com>

       new Net::SMTP_auth [ HOST, ] [ OPTIONS ]
           This  is  the  constructor  for  a new Net::SMTP_auth object. It is taken from Net::SMTP as all other
           methods (except auth and auth_types) are, too.

       Copyright  (c)  2001,  2003,  2006  zeitform Internet Dienste. All rights reserved.  This program is free
       software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.36.0                                       2022-11-19                                     SMTP_auth(3pm)

       This module implements a client interface to the SMTP and ESMTP protocol AUTH service extension, enabling
       a perl5 application to talk to and authenticate against SMTP servers. This documentation assumes that you
       are familiar with the concepts of the SMTP protocol described in RFC821 and with the AUTH service
       extension described in RFC2554.

       A new Net::SMTP_auth object must be created with the new method. Once this has been done, all SMTP
       commands are accessed through this object.

       The Net::SMTP_auth class is a subclass of Net::SMTP, which itself is a subclass of Net::Cmd and
       IO::Socket::INET.

       This example authenticates via CRAM-MD5 and sends a small message to the postmaster at the SMTP server
       known as mailhost:

           #!/usr/bin/perl -w

           use Net::SMTP_auth;

           $smtp = Net::SMTP_auth->new('mailhost');
           $smtp->auth('CRAM-MD5', 'user', 'password');

           $smtp->mail($ENV{USER});
           $smtp->to('postmaster');

           $smtp->data();
           $smtp->datasend("To: postmaster\n");
           $smtp->datasend("\n");
           $smtp->datasend("A simple test message\n");
           $smtp->dataend();

           $smtp->quit;

       Unless otherwise stated all methods return either a true or false  value,  with  true  meaning  that  the
       operation  was a success. When a method states that it returns a value, failure will be returned as undef
       or an empty list.

       auth_types ()
           Returns the AUTH methods supported by the server as an array or in a  space  separated  string.  This
           string  is  exacly  the line given by the SMTP server after the "EHLO" command containing the keyword
           "AUTH".

       auth ( AUTH, USER, PASSWORD )
           Authenticates the user "USER" via the authentication  method  "AUTH"  and  the  password  "PASSWORD".
           Returns  true  if  successful and false if the authentication failed. Remember that the connection is
           not closed if the authentication fails. You may issue a different authentication attempt. If you once
           are successfully authenticated, you cannot send the "AUTH" command again.

           The "AUTH" method "NTLM" is supported via Authen::NTLM (thanks to James Fryman).

       Net::SMTP_auth - Simple Mail Transfer Protocol Client with AUTHentication

       Net::SMTP and Net::Cmd

           use Net::SMTP_auth;

           # Constructors
           $smtp = Net::SMTP_auth->new('mailhost');
           $smtp = Net::SMTP_auth->new('mailhost', Timeout => 60);