probs configuring check_dns

[Tom Welsh]

Hi all, 

im slowly but surely adding checks to my nagios box an ive come over a 
problem i cant seem to get to the bottom of on check_dns. From the shell i 
can do .... 

#./check_dns -H www.tcplan.net -v
DNS ok - 0 seconds response time, Address(es) is/are 80.87.131.163 

which works fine. I have specified the following in my checkcommands.cfg and 
services.cfg respectivly 

CHECKCOMMANDS.cfg
# 'check_dns' command definition
define command{
       command_name    check_dns
       command_line    $USER1$/check_dns -H ns1.clara.net -s $HOSTADDRESS$
       } 

SERVICES.CFG
# Service definition for check_dns 

define service{
       use                             generic-service         ; Name of 
servic
e template to use
       host_name                       web-server
       service_description             check_dns
       is_volatile                     0
       check_period                    24x7
       max_check_attempts              3
       normal_check_interval           5
       retry_check_interval            1
       contact_groups                  tcplan-support
       notification_interval           240
       notification_period             24x7
       notification_options            c,r
       check_command                   check_tcp!$ARG1$
       } 

but i get the following unknown problem shown in SERVICE STATUS..... 

Server port must be a positive integer. 

Can someone point out my obvious mistake coz i cant spot it and i've been 
looking now for over an hour. 

Cheers 

Tom Welsh


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