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.
Example #1 Enabling a secure connection within Zend_Mail_Transport_Smtp
span style="color: #ff0000;">'ssl' => 'tls',
'port' => 25); // Optional port number supplied