Code:
c:192.168.1.10 12000 user password (this is the right configuration)

c: 192.168.1.10 12000 user password (not ok because there is space between c: 192.xx)

c:dns-host.no.ip 12000 user password (not ok. For some people worked only with lan ip)

C:192.168.1.10 12000 user password (not ok because the C must be c)
by fiku75