[eluser]Unknown[/eluser]
My SMTP provider (Exchange system) doesn't accept SSL connections and requires the use of SMTP over TLS instead (STARTTLS, RFC 3207). Here is a small patch to the Email class which adds support for it. It is written against 1.7.2. If this is useful to others, you're most welcome to incorporate it in a future release.
Usage:
Specify server settings as a regular SMTP server (tcp://servername, typically port 25 or 587).
Enable new setting in config ($config['starttls'] = TRUE
Depends on TLS being available (i.e., listed in the 'Registered Stream Socket Transports' section of phpinfo()).
Patch
Code:
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -51,6 +51,7 @@ class CI_Email {
var $send_multipart = TRUE; // TRUE/FALSE - Yahoo does not like multipart alternative, so this is an override. Set to FALSE for Yahoo.
var $bcc_batch_mode = FALSE; // TRUE/FALSE Turns on/off Bcc batch feature
var $bcc_batch_size = 200; // If bcc_batch_mode = TRUE, sets max number of Bccs in each batch
+ var $starttls = FALSE; // Issue STARTTLS after connection to switch to Secure SMTP over TLS (RFC 3207)
var $_safe_mode = FALSE;
var $_subject = "";
var $_body = "";
@@ -1581,7 +1582,20 @@ class CI_Email {
return FALSE;
}
- $this->_smtp_connect();
+ if (!$this->_smtp_connect()) {
+ return FALSE;
+ }
+
+ if ($this->starttls) {
+ if (! $this->_send_command('starttls')) {
+ $this->_set_error_message('email_starttls_failed');
+ return FALSE;
+ }
+ stream_socket_enable_crypto($this->_smtp_connect, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
+ // Re-issue hello to get updated service list (RFC 3207 section 4.2)
+ $this->_send_command('hello');
+ }
+
$this->_smtp_authenticate();
$this->_send_command('from', $this->clean_email($this->_headers['From']));
@@ -1708,6 +1722,12 @@ class CI_Email {
$resp = 221;
break;
+ case 'starttls' :
+
+ $this->_send_data('STARTTLS');
+
+ $resp = 220;
+ break;
}
$reply = $this->_get_smtp_data();
Example:
Code:
<?php
function send_email($addr, $subject, $data) {
$this->load->library('email');
$config['protocol'] = 'smtp';
$config['smtp_host'] = 'tcp://servername'; # Not tls://
$config['smtp_port'] = 25;
$config['starttls'] = TRUE;
$config['smtp_user'] = <username>;
$config['smtp_pass'] = <password>;
$config['smtp_timeout'] = 5;
$config['newline'] = "\r\n";
$config['charset'] = 'utf-8';
$config['mailtype'] = 'html';
$this->email->initialize($config);
$this->email->from('<email addr>', 'User name');
$this->email->to($addr);
$this->email->subject($subject);
$this->email->message($data);
$rc = $this->email->send();
echo $this->email->print_debugger();
}
?>
