--- dokuwiki/inc/mail.php~	2008-02-25 16:51:02.000000000 +0200
+++ dokuwiki/inc/mail.php	2008-02-25 16:51:07.741031127 +0200
@@ -124,7 +125,16 @@
       }
 
       if(!utf8_isASCII($text)){
-        $text = '=?UTF-8?Q?'.mail_quotedprintable_encode($text,0).'?=';
+        // put the quotes outside as in =?UTF-8?Q?"Elan Ruusam=C3=A4e"?= vs "=?UTF-8?Q?Elan Ruusam=C3=A4e?="
+        if (preg_match('/^"(.+)"$/', $text, $matches)) {
+          $text = '"=?UTF-8?Q?'.mail_quotedprintable_encode($matches[1], 0).'?="';
+        } else {
+          $text = '=?UTF-8?Q?'.mail_quotedprintable_encode($text, 0).'?=';
+        }
+        // additionally the space character should be encoded as =20 (or each
+        // word QP encoded separately).
+        // however this is needed only in mail headers, not globally in mail_quotedprintable_encode().
+        $text = str_replace(" ", "=20", $text);
       }
     }else{
       $text = '';