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Rblcheck
Jul 20, 2023
Command-line interface to Paul Vixie’s RBL filter
This program is a very basic interface to Paul Vixie’s RBL filter. The basic idea of the filter is that when someone is blacklisted for an email abuse, a new domain name is resolved in the form of “a.b.c.d.rbl.maps.vix.com”, where “a.b.c.d” is actually the IP address “d.c.b.a”. For example, if the IP address 127.0.0.2 were listed as a blacklisted address, “2.0.0.127.rbl.maps.vix.com” would have a DNS entry this is a real example; that address is in place as a verification mechanism.
For more information about the RBL blacklist, please take a look at http//maps.vix.com/rbl/ . For more information about BIND, drop by http//www.isc.org/bind.html . The official home page for rblcheck is at http//www.xnet.com/~emarshal/rblcheck/ .
Any ideas, bugfixes, or porting notes should be sent to me at “emarshal@logic.net”. Don’t bug the MAPS people about this; they didn’t write it, and probably wouldn’t like getting a bunch of mail about it.
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