# Securing SMTP Transport

`Zend_Mail` also supports the use of either TLS or SSL to secure a SMTP connection. This can be enabled be passing the 'ssl' parameter to the configuration array in the `Zend_Mail_Transport_Smtp` constructor with a value of either 'ssl' or 'tls'. A port can optionally be supplied, otherwise it defaults to 25 for TLS or 465 for SSL.

## Enabling a secure connection within Zend_Mail_Transport_Smtp

    $config = array('ssl' => 'tls',
                    'port' => 25); // Optional port number supplied

    $transport = new Zend_Mail_Transport_Smtp('mail.server.com', $config);

    $mail = new Zend_Mail();
    $mail->setBodyText('This is the text of the mail.');
    $mail->setFrom('sender@test.com', 'Some Sender');
    $mail->addTo('recipient@test.com', 'Some Recipient');
    $mail->setSubject('TestSubject');
    $mail->send($transport);