SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.1.5): Link-ID == false, connect failed
mysql error: Unknown MySQL server host 'db08.kundenserver.de' (0)
mysql error number: 2005
mysql version: unknown
php version: 4.4.9
Date: 22.10.2017 @ 11:46
Script: /rezepte/orgasmus.rpt.php
Referer: