Fatal error: Connecting to MySQL server 'db.abc-muenster.de' failed.

You get more information about the problem in our knowledge base: http://www.woltlab.com/help/?code=2005

Information:

error message: Connecting to MySQL server 'db.abc-muenster.de' failed.
error code: 2005
sql type: MySQLDatabase
sql error: Unknown MySQL server host 'db.abc-muenster.de' (1)
sql error number: 2005
sql version:
file: /var/www/vhosts/abc-muenster.de/httpdocs/forum/wcf/lib/system/database/MySQLDatabase.class.php (29)
php version: 5.2.4-2ubuntu5.12
wcf version: 1.0.8
date: Mon, 06 Feb 2012 03:25:36 +0000
request: /forum/
referer:

Stacktrace:

#0 /var/www/vhosts/abc-muenster.de/httpdocs/forum/wcf/lib/system/database/Database.class.php(76): MySQLDatabase->connect()
#1 /var/www/vhosts/abc-muenster.de/httpdocs/forum/wcf/lib/system/WCF.class.php(270): Database->__construct(...)
#2 /var/www/vhosts/abc-muenster.de/httpdocs/forum/wcf/lib/system/WCF.class.php(88): WCF->initDB()
#3 /var/www/vhosts/abc-muenster.de/httpdocs/forum/global.php(18): WCF->__construct()
#4 /var/www/vhosts/abc-muenster.de/httpdocs/forum/index.php(7): require_once('/var/www/vhosts...')
#5 {main}