program/include/rcube_message.php
@@ -448,7 +448,9 @@ } // part is a file/attachment else if (preg_match('/^(inline|attach)/', $mail_part->disposition) || $mail_part->headers['content-id'] || (empty($mail_part->disposition) && $mail_part->filename) $mail_part->headers['content-id'] || ($mail_part->filename && (empty($mail_part->disposition) || preg_match('/^[a-z0-9!#$&.+^_-]+$/i', $mail_part->disposition))) ) { // skip apple resource forks if ($message_ctype_secondary == 'appledouble' && $secondary_type == 'applefile')