diff --git a/config.inc.php b/config.inc.php
index f7328a64..d1e76e18 100644
--- a/config.inc.php
+++ b/config.inc.php
@@ -150,6 +150,12 @@ $CONF['database_tables'] = array (
 // Leave blank to send email from the logged-in Admin's Email address.
 $CONF['admin_email'] = '';
 
+// Define the smtp password for admin_email.
+// This will be used to send emails from to create mailboxes and
+// from Send Email / Broadcast message pages.
+// Leave blank to send emails without authentification
+$CONF['admin_smtp_password'] = '';
+
 // Site admin name
 // This will be used as signature in notification messages
 $CONF['admin_name'] = 'Postmaster';
diff --git a/functions.inc.php b/functions.inc.php
index 18f2dec6..3fbbee19 100644
--- a/functions.inc.php
+++ b/functions.inc.php
@@ -1357,11 +1357,12 @@ function to64($v, $n) {
  * @param String - To:
  * @param String - From:
  * @param String - Subject: (if called with 4 parameters) or full mail body (if called with 3 parameters)
+ * @param String (optional) - Password
  * @param String (optional, but recommended) - mail body
  * @return bool - true on success, otherwise false
  * TODO: Replace this with something decent like PEAR::Mail or Zend_Mail.
  */
-function smtp_mail($to, $from, $data, $body = "") {
+function smtp_mail($to, $from, $data, $password = "", $body = "") {
     global $CONF;
     $smtpd_server = $CONF['smtp_server'];
     $smtpd_port = $CONF['smtp_port'];
@@ -1399,6 +1400,16 @@ function smtp_mail($to, $from, $data, $body = "") {
         smtp_get_response($fh);
         fputs($fh, "EHLO $smtp_server\r\n");
         smtp_get_response($fh);
+
+        if (!empty($password)) {
+            fputs($fh,"AUTH LOGIN\r\n");
+            smtp_get_response($fh);
+            fputs($fh, base64_encode($from) . "\r\n");
+            smtp_get_response($fh);
+            fputs($fh, base64_encode($password) . "\r\n");
+            smtp_get_response($fh);
+        }
+
         fputs($fh, "MAIL FROM:<$from>\r\n");
         smtp_get_response($fh);
         fputs($fh, "RCPT TO:<$to>\r\n");
@@ -1429,6 +1440,16 @@ function smtp_get_admin_email() {
     }
 }
 
+/**
+ * smtp_get_admin_password
+ * Action: Get smtp password for admin email
+ * Call: smtp_get_admin_password
+ * @return string - admin smtp password
+ */
+function smtp_get_admin_password() {
+    return Config::read_string('admin_smtp_password');
+}
+
 
 //
 // smtp_get_response
diff --git a/model/MailboxHandler.php b/model/MailboxHandler.php
index fc16c62f..b811f888 100644
--- a/model/MailboxHandler.php
+++ b/model/MailboxHandler.php
@@ -463,7 +463,7 @@ class MailboxHandler extends PFAHandler {
         $fSubject = Config::lang('pSendmail_subject_text');
         $fBody = Config::read('welcome_text');
 
-        if (!smtp_mail($fTo, $fFrom, $fSubject, $fBody)) {
+        if (!smtp_mail($fTo, $fFrom, $fSubject, smtp_get_admin_password(), $fBody)) {
             $this->errormsg[] = Config::lang_f('pSendmail_result_error', $this->id);
             return false;
         }
diff --git a/public/broadcast-message.php b/public/broadcast-message.php
index b2fe38f0..f3ed90ac 100644
--- a/public/broadcast-message.php
+++ b/public/broadcast-message.php
@@ -90,7 +90,7 @@ if ($_SERVER['REQUEST_METHOD'] == "POST") {
 
                 $fHeaders .= $b_message;
 
-                if (!smtp_mail($fTo, $smtp_from_email, $fHeaders)) {
+                if (!smtp_mail($fTo, $smtp_from_email, $fHeaders, smtp_get_admin_password())) {
                     flash_error(Config::lang_f('pSendmail_result_error', $fTo));
                 } else {
                     flash_info(Config::lang_f('pSendmail_result_success', $fTo));
diff --git a/public/sendmail.php b/public/sendmail.php
index e711e72a..753653d5 100644
--- a/public/sendmail.php
+++ b/public/sendmail.php
@@ -62,7 +62,7 @@ if ($_SERVER['REQUEST_METHOD'] == "POST") {
     }
 
     if ($error != 1) {
-        if (!smtp_mail($fTo, $fFrom, $fSubject, $tBody)) {
+        if (!smtp_mail($fTo, $fFrom, $fSubject, smtp_get_admin_password(), $tBody)) {
             flash_error(Config::lang_f('pSendmail_result_error', $fTo));
         } else {
             flash_info(Config::lang_f('pSendmail_result_success', $fTo));
diff --git a/public/users/password-recover.php b/public/users/password-recover.php
index 54d14b57..dfb23f45 100644
--- a/public/users/password-recover.php
+++ b/public/users/password-recover.php
@@ -45,7 +45,7 @@ function sendCodebyEmail($to, $username, $code) {
 
     $url = $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['HTTP_HOST'] . dirname($_SERVER['REQUEST_URI']) . '/password-change.php?username=' . urlencode($username) . '&code=' . $code;
 
-    return smtp_mail($to, Config::read('admin_email'), Config::Lang('pPassword_welcome'), Config::lang_f('pPassword_recovery_email_body', $url));
+    return smtp_mail($to, Config::read('admin_email'), Config::Lang('pPassword_welcome'), Config::read('admin_smtp_password'), Config::lang_f('pPassword_recovery_email_body', $url));
 }
 
 function sendCodebySMS($to, $username, $code) {