2 files changed, 37 insertions, 12 deletions

diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index 93eb97fd4..b07e3a6d9 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -1366,8 +1366,8 @@ function rcmail_deliver_message(&$message, $from, $mailto, &$smtp_error, &$body_
     if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
       if (preg_match_all('/<([^@]+@[^>]+)>/', $headers_enc['To'], $m)) {
         $headers_enc['To'] = implode(', ', $m[1]);
-        }
       }
+    }
 
     $msg_body = $message->get();
 
@@ -1376,10 +1376,23 @@ function rcmail_deliver_message(&$message, $from, $mailto, &$smtp_error, &$body_
             'file' => __FILE__, 'line' => __LINE__,
             'message' => "Could not create message: ".$msg_body->getMessage()),
             TRUE, FALSE);
-    else if (ini_get('safe_mode'))
-      $sent = mail($headers_enc['To'], $headers_enc['Subject'], $msg_body, $header_str);
-    else
-      $sent = mail($headers_enc['To'], $headers_enc['Subject'], $msg_body, $header_str, "-f$from");
+    else {
+      $delim   = $RCMAIL->config->header_delimiter();
+      $to      = $headers_enc['To'];
+      $subject = $headers_enc['Subject'];
+
+      if ($delim != "\r\n") {
+        $header_str = str_replace("\r\n", $delim, $header_str);
+        $msg_body   = str_replace("\r\n", $delim, $msg_body);
+        $to         = str_replace("\r\n", $delim, $to);
+        $subject    = str_replace("\r\n", $delim, $subject);
+      }
+
+      if (ini_get('safe_mode'))
+        $sent = mail($to, $subject, $msg_body, $header_str);
+      else
+        $sent = mail($to, $subject, $msg_body, $header_str, "-f$from");
+    }
   }
 
   if ($sent) {
@@ -1418,7 +1431,7 @@ function rcmail_send_mdn($uid, &$smtp_error)
     $recipient = array_shift($IMAP->decode_address_list($message->headers->mdn_to));
     $mailto = $recipient['mailto'];
 
-    $compose = new Mail_mime($RCMAIL->config->header_delimiter());
+    $compose = new Mail_mime("\r\n");
 
     $compose->setParam('text_encoding', 'quoted-printable');
     $compose->setParam('html_encoding', 'quoted-printable');
diff --git a/program/steps/mail/sendmail.inc b/program/steps/mail/sendmail.inc
index 4229e7d3b..3c32530a4 100644
--- a/program/steps/mail/sendmail.inc
+++ b/program/steps/mail/sendmail.inc
@@ -249,7 +249,7 @@ $headers = array();
 // if configured, the Received headers goes to top, for good measure
 if ($CONFIG['http_received_header'])
 {
-  $nldlm = $RCMAIL->config->header_delimiter() . "\t";
+  $nldlm = "\r\n\t";
   // FROM/VIA
   $http_header = 'from ';
   if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
@@ -398,7 +398,7 @@ $LINE_LENGTH = $RCMAIL->config->get('line_length', 72);
 @set_time_limit(0);
 
 // create PEAR::Mail_mime instance
-$MAIL_MIME = new Mail_mime($RCMAIL->config->header_delimiter());
+$MAIL_MIME = new Mail_mime("\r\n");
 
 // Check if we have enough memory to handle the message in it
 // It's faster than using files, so we'll do this if we only can
@@ -419,7 +419,9 @@ if (is_array($_SESSION['compose']['attachments']) && $CONFIG['smtp_server']
 // the HTML part and the plain-text part
 
 if ($isHtml) {
-  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body', array('body' => $message_body, 'type' => 'html', 'message' => $MAIL_MIME));
+  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body',
+    array('body' => $message_body, 'type' => 'html', 'message' => $MAIL_MIME));
+
   $MAIL_MIME->setHTMLBody($plugin['body'] . ($footer ? "\r\n<pre>".$footer.'</pre>' : ''));
 
   // add a plain text version of the e-mail as an alternative part.
@@ -430,7 +432,14 @@ if ($isHtml) {
     // empty message body breaks attachment handling in drafts 
     $plainTextPart = "\r\n"; 
   }
-  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body', array('body' => $plainTextPart, 'type' => 'alternative', 'message' => $MAIL_MIME));
+  else {
+    // make sure all line endings are CRLF (#1486712)
+    $plainTextPart = preg_replace('/\r?\n/', "\r\n", $plainTextPart);
+  }
+
+  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body',
+    array('body' => $plainTextPart, 'type' => 'alternative', 'message' => $MAIL_MIME));
+
   $MAIL_MIME->setTXTBody($plugin['body']);
 
   // look for "emoticon" images from TinyMCE and change their src paths to
@@ -452,7 +461,10 @@ else {
     // empty message body breaks attachment handling in drafts 
     $message_body = "\r\n"; 
   }
-  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body', array('body' => $message_body, 'type' => 'plain', 'message' => $MAIL_MIME));
+
+  $plugin = $RCMAIL->plugins->exec_hook('outgoing_message_body',
+    array('body' => $message_body, 'type' => 'plain', 'message' => $MAIL_MIME));
+
   $MAIL_MIME->setTXTBody($plugin['body'], false, true);
 }
 
@@ -512,7 +524,7 @@ if (function_exists('mb_encode_mimeheader'))
 {
   mb_internal_encoding($message_charset);
   $headers['Subject'] = mb_encode_mimeheader($headers['Subject'],
-    $message_charset, 'Q', $RCMAIL->config->header_delimiter(), 8);
+    $message_charset, 'Q', "\r\n", 8);
   mb_internal_encoding(RCMAIL_CHARSET);
 }