De domain name was ok and I can ping it froml the lansweeper server. Maybe this error says more:
DB is located local on the server
13/09/2010 14:01:33: Cannot connect to database, check your config file, will try again in 1 minute
Cannot open database "lansweeperdb" requested by the login. The login failed.
Login failed for user 'lansweeperuser'.
13/09/2010 14:02:37: Starting up service 4.0.0.37, port 9524, 10 computer threads, 5 IP threads
13/09/2010 14:02:37: Premium version
13/09/2010 14:02:39: Skipped, Netbios name not filled in