Fixed #3979 Mailbox users unable to save autoresponders

Till Brehm

2016-07-24 b9a3ef486ebcde18a5ade37865ff8f397185d24f

 server/plugins-available/maildrop_plugin.inc.php

@@ -211,7 +211,7 @@
                  $mailfilter_content .= file_get_contents($conf["rootpath"].'/conf/mailfilter_move_junk.master')."\n";
               }
            }
            $mailfilter_content .= $data["new"]["custom_mailfilter"];
            $mailfilter_content .= str_replace("\r\n","\n",$data["new"]["custom_mailfilter"]);

            // Replace windows linebreaks in mailfilter file
            $mailfilter_content = str_replace("\r\n", "\n", $mailfilter_content);