Nagios: check all smtp servers. If one of them is ok, return ok. Usage: check_smtp_all.sh host1 [host2 [...]]

check_smtp_all.sh

#!/bin/bash

for TRG in $@
do
        STT=`/usr/local/nagios/libexec/check_smtp -H $TRG`

        if echo $STT | grep -q "SMTP OK"
        then
                echo $STT
                exit 0
        fi
done

echo $STT
exit 2