in config/functions.php at line 10
foreach ($_POST as $postkey => $postval)
{
$_POST[$postkey] = preg_replace('/[\'";$%]/','',$postval);
}
replace with
foreach ($_POST as $postkey => $postval)
{
if (($postkey <> "crypt") && ($postkey <> "clear"))
$_POST[$postkey] = preg_replace('/[\'";$%]/','',$postval);
}
this is for exim4u current stable.