Fatal error: Uncaught exception 'Swift_TransportException' with message 'Failed to authenticate on SMTP server with username "login@wp.pl" using 2 possible authenticators' in /lib/classes/Swift/Transport/Esmtp/AuthHandler.php:181 Stack trace: #0 /lib/classes/Swift/Transport/EsmtpTransport.php(334): Swift_Transport_Esmtp_AuthHandler->afterEhlo(Object(Swift_SmtpTransport)) #1 /lib/classes/Swift/Transport/AbstractSmtpTransport.php(118): Swift_Transport_EsmtpTransport->_doHeloCommand() #2 /lib/classes/Swift/Mailer.php(79): Swift_Transport_AbstractSmtpTransport->start() #3 /test.php(28): Swift_Mailer->send(Object(Swift_Message), Array) #4 {main} thrown in /lib/classes/Swift/Transport/Esmtp/AuthHandler.php on line 181

[PHP] pobierz, plaintext 
  $mail_to = 'login@interia.eu';
  $from_name = 'Jan Kowalski';
  $from_password = 'haslo';
  $from_login = 'login@wp.pl';
  $from_email = 'login@wp.pl';
  $subject = 'test';
  $message = 'test2';
 
  require_once 'lib/swift_required.php';
  $transport = Swift_SmtpTransport::newInstance()
  ->setHost('smtp.wp.pl') 
  ->setPort(465) 
  ->setEncryption('ssl') 
  ->setUsername($from_login)
  ->setPassword($from_password);
 
  $mailer = Swift_Mailer::newInstance($transport);
  $message_mailer = Swift_Message::newInstance($subject)
  ->setFrom(array($from_email => $from_name))
  ->setTo(array($mail_to))
  ->setBody($message);
 
  if (!$mailer->send($message_mailer, $errors)) {
    echo 'blad';
  }else{
    echo 'ok';
  }
[PHP] pobierz, plaintext 

Usługi pop3/smtp/imap są domyślnie wyłączone.
Aby je aktywować przejdź na stronę opcji poczty

http://poczta.wp.pl/info-pomoc-konfig.html?ticaid=1170ac

Włączyłeś?