NAME

       "check_rbl" - a Nagios plugin to check if an SMTP server is blacklisted

DESCRIPTION

       check_rbl is a Nagios plugin to check if an SMTP server is blacklisted

VERSION

       Version 1.6.0

SYNOPSIS

       check_rbl [--help] [--verbose] [--version] [--timeout t]
                        -H hostname --server servername
                        [--critical n] [--warning n] [--workers n]

REQUIRED ARGUMENTS

         -s, --server=STRING  RBL server (may be repeated)

OPTIONS

        -H, --host=STRING                         SMTP server to check
        -U, --url=STRING                          URL to check. Will be ignored if host is set.
        -?, --usage                                Print usage information
        -h, --help                                 Print detailed help screen
        -V, --version                              Print version information
        -a, --append=STRING                        Append string at the end of the plugin output
        --extra-opts=[<section>[@<config_file>]]   Section and/or config_file from which to load extra options (may repeat)
        -c, --critical=INTEGER                     Number of blacklisting servers for a critical warning
        -w, --warning=INTEGER                      Number of blacklisting servers for a warning
        -d, --debug                                Prints debugging information
        -r, --retry=INTEGER                        Number of times to try a DNS query (default is 4)
        --workers=INTEGER                          Number of parallel checks
        --whitelistings, --wl                      Check whitelistings instead of blacklistings
        --query-timeout=INTEGER                    Timeout of the RBL queries
        -t, --timeout=INTEGER                      Seconds before plugin times out (default: 15)
        -v, --verbose                              Show details for command-line debugging (can repeat up to 3 times)

EXAMPLE

         check_rbl -t 30 -H matteocorti.ch -s zen.spamhaus.org -s bl.spamcop.net

DIAGNOSTICS

       You can specify multiple --verbose options to increase the program verbosity. --debug can be used to
       display the process and internals of the querying mechanism.

EXIT STATUS

       0 if OK, 1 in case of a warning, 2 in case of a critical status and 3 in case of an unknown problem

DEPENDENCIES

       check_updates depends on

       •   Data::Validate::Domain

       •   Data::Validate::IP

       •   Getopt::Long

       •   IO::Select

       •   Monitoring::Plugin

       •   Monitoring::Plugin::Threshold

       •   Net::DNS

       •   Readonly

CONFIGURATION

INCOMPATIBILITIES

       None reported.

SEE ALSO

       Nagios documentation

BUGS AND LIMITATIONS

       No bugs have been reported.

       Please report any bugs or feature requests through the web interface at
       https://github.com/matteocorti/check_rbl/issues

AUTHOR

       Matteo Corti <matteo@corti.li>

LICENSE AND COPYRIGHT

       Copyright (c) 2010, Elan Ruusamae <glen@delfi.ee>

       Copyright (c) 2008-2017, Matteo Corti <matteo.corti@id.ethz.ch>

       This module is free software; you can redistribute it and/or modify it under the terms of GNU general
       public license (gpl) version 3.  See the LICENSE file for details.

DISCLAIMER OF WARRANTY

       BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT
       PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER
       PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
       INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
       PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE
       SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

       IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY
       OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE
       TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
       THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
       RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE
       WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
       DAMAGES.

ACKNOWLEDGMENTS

       Elan Ruusamaee for the improved parallel support and several fixes

       Victor V Kudlak for parallel support

       Jan Kantert for whitelistings support