1Mail::SpamAssassin::PluUgsienr::CUoRnItLroicbaultBeLdM(a3Pi)elr:l:SDpoacmuAmsesnatsastiino:n:Plugin::URILocalBL(3)
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NAME

6       URILocalBL - blocklist URIs using local information (ISP names, address
7       lists, and country codes)
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SYNOPSIS

10       This plugin creates some new rule test types, such as "uri_block_cc",
11       "uri_block_cidr", and "uri_block_isp".  These rules apply to the URIs
12       found in the HTML portion of a message, i.e. <a href=...> markup.
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14         loadplugin    Mail::SpamAssassin::Plugin::URILocalBL
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16       Why local blocklisting? There are a few excellent, effective, and well-
17       maintained DNSBL's out there. But they have several drawbacks:
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19       • blocklists can cover tens of thousands of entries, and you can't
20         select which ones you use;
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22       • verifying that it's correctly configured can be non-trivial;
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24       • new blocklisting entries may take a while to be detected and entered,
25         so it's not instantaneous.
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27       Sometimes all you want is a quick, easy, and very surgical blocklisting
28       of a particular site or a particular ISP. This plugin is defined for
29       that exact usage case.
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RULE DEFINITIONS AND PRIVILEGED SETTINGS

32       The format for defining a rule is as follows:
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34         uri_block_cc SYMBOLIC_TEST_NAME cc1 cc2 cc3 cc4 ..
35         uri_block_cc SYMBOLIC_TEST_NAME !cc1 !cc2 ..
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37       or:
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39         uri_block_cont SYMBOLIC_TEST_NAME co1 co2 co3 co4 ..
40         uri_block_cont SYMBOLIC_TEST_NAME !co1 !co2 ..
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42       or:
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44         uri_block_cidr SYMBOLIC_TEST_NAME a.a.a.a b.b.b.b/cc
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46       or:
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48         uri_block_isp SYMBOLIC_TEST_NAME "Data Rancid" McCarrier Phishers-r-Us
49
50       Example rule for matching a URI in China:
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52         uri_block_cc TEST1 cn
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54       If you specify list of negations, such rule will match ANY country
55       except the listed ones (Finland, Sweden):
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57         uri_block_cc TEST1 !fi !se
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59       Continents uri_block_cont works exactly the same as uri_block_cc.
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61       This would block the URL http://www.baidu.com/index.htm.  Similarly, to
62       match a Spam-haven netblock:
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64         uri_block_cidr TEST2 65.181.64.0/18
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66       would match a netblock where several phishing sites were recently
67       hosted.
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69       And to block all CIDR blocks registered to an ISP, one might use:
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71         uri_block_isp TEST3 "Data Rancid" ColoCrossing
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73       Quote ISP names containing spaces.
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75       Lastly, if there's a country that you want to block but there's an
76       explicit host you wish to exempt from that blocklist, you can use:
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78         uri_block_exclude TEST1 www.baidu.com
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80       if you wish to exempt URL's referring to this host. The same syntax is
81       applicable to CIDR and ISP blocks as well.
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DEPENDENCIES

84       The Country-Code based filtering can use any Mail::SpamAssassin::GeoDB
85       supported module like MaxMind::DB::Reader (GeoIP2) or Geo::IP.  ISP
86       based filtering might require a paid subscription database like
87       GeoIPISP.
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91perl v5.38.0                      2023M-a0i7l-:2:2SpamAssassin::Plugin::URILocalBL(3)
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