A tool for testing a mail server or IP against a DNS RBL.
gem install rebbler
rebbler -s
Browse to localhost:4567.
Note that the server uses web sockets, so use a modern browser.
rebbler -s ip|name
rebbler -n ip|name
When using as a nagios plugin, the check command definition we use looks like this:
define command{
command_name check_rbl
command_line bash -l -c 'rvm-exec /usr/local/rebbler/bin/rebbler -n $HOSTADDRESS$'
}