DNSBLC(1) DNSBLC(1) NAME dnsblc - command line interface to DNSBL SYNOPSIS dnsblc [-q] [-v] ip-addr [blname [rcode]] DESCRIPTION dnsblc queries one or more DNSBLs (DNS-based block- list/blacklist) for a particular IP address. It uses a DNSBL registry in a file "dnsbl.conf" typically installed in a mvmf public area. (A sample is included with mvmf.) Options which may be given are as follows: -q quiet mode. Does not print any output. -v verbose mode. Normally, dnsblc will only report hits against DNSBL(s). When this option is given, dnsblc prints a line for each DNSBL and rcode tested. ip-addr is the IP address to be tested. blname, if given, is the name of a blocklist (as defined in dnsbl.conf) to test. If omitted, all blocklists defined in dnsbl.conf are queried. rcode, if given, is the specific code for the specified blocklist to test, as defined in dnsbl.conf . Each block- list may have one or more kinds of results defined. Typi- cally the primary result code is defined as "std" and alternate result types are given other names. OPERATION dnsblc will print a line for every blname/rcode for which there is a "hit" on the ip-address. This behaviour may be modified by the "-q" and "-v" flags as described above. On exit, dnsblc will give a status code of 0 if any of the blocklists were hit, and will give a status code of 1 if there were no hits. Examples (some results omitted for brevity): % dnsblc 127.0.0.2 127.0.0.2 against sorbs/spam: positive 127.0.0.2 against sorbs/zombie: positive 127.0.0.2 against spamcop/std: positive 127.0.0.2 against spamhaus/sbl: positive 127.0.0.2 against spamhaus/xbl: positive 127.0.0.2 against spamhaus/std: positive % dnsblc -q 127.0.0.2 % % dnsblc -v 127.0.0.2 127.0.0.2 against sorbs/http: negative 127.0.0.2 against sorbs/socks: negative 127.0.0.2 against sorbs/misc: negative 127.0.0.2 against sorbs/relay: negative 127.0.0.2 against sorbs/spam: negative 127.0.0.2 against sorbs/web: positive 127.0.0.2 against sorbs/block: negative 127.0.0.2 against sorbs/zombie: negative 127.0.0.2 against sorbs/dul: positive 127.0.0.2 against spamcop/std: positive 127.0.0.2 against spamcop/ext: negative 127.0.0.2 against spamhaus/sbl: positive 127.0.0.2 against spamhaus/xbl: positive 127.0.0.2 against spamhaus/std: positive 127.0.0.2 against visi.relays/std: negative % SEE ALSO http://www.mvmf.org/ -- the mvmf web site. CREDITS TO M. Mallett (email@example.com) 2005,2006,2007 BUGS You tell me..