Fatal error: Connecting to MySQL server 'db380790453.db.1and1.com' 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 'db380790453.db.1and1.com' failed.
error code: 2005
sql type: MySQLDatabase
sql error: Unknown MySQL server host 'db380790453.db.1and1.com' (0)
sql error number: 2005
sql version:
file: /homepages/43/d17216613/htdocs/InvestoxForum/wbb3/wcf/lib/system/database/MySQLDatabase.class.php (29)
php version: 5.2.17
wcf version: 1.0.11 pl 3 (Horizon)
date: Mon, 06 Apr 2020 09:47:12 +0000
request: /index.php?page=Board&boardID=12&s=a4e8e78d86b847e9fc0d77e756b383cff7676db0
referer:

Stacktrace:

#0 /homepages/43/d17216613/htdocs/InvestoxForum/wbb3/wcf/lib/system/database/Database.class.php(76): MySQLDatabase->connect()
#1 /homepages/43/d17216613/htdocs/InvestoxForum/wbb3/wcf/lib/system/WCF.class.php(270): Database->__construct(...)
#2 /homepages/43/d17216613/htdocs/InvestoxForum/wbb3/wcf/lib/system/WCF.class.php(88): WCF->initDB()
#3 /homepages/43/d17216613/htdocs/InvestoxForum/wbb3/global.php(18): WCF->__construct()
#4 /homepages/43/d17216613/htdocs/InvestoxForum/wbb3/index.php(7): require_once('/homepages/43/d...')
#5 {main}