MIME::Lite->send('smtp',{auth_user=>'foo',auth_pwd=>'bar'},
                 $server,@Net_SMTP_opts);
$MIME_Lite->send_by_smtp({auth_user=>'foo',auth_pwd=>'bar'},
                        $server,@Net_SMTP_opts);
$MIME_Lite->send_by_smtp({Debug=>1});