1Mail::SpamAssassin::PluUgsienr::CHoansthrciabsuht(e3d)PMearill:D:oScpuammeAnstsaatsisoinn::Plugin::Hashcash(3)
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NAME

6       Mail::SpamAssassin::Plugin::Hashcash - perform hashcash verification
7       tests
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SYNOPSIS

10         loadplugin     Mail::SpamAssassin::Plugin::Hashcash
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DESCRIPTION

13       Hashcash is a payment system for email where CPU cycles used as the
14       basis for an e-cash system.  This plugin makes it possible to use valid
15       hashcash tokens added by mail programs as a bonus for messages.
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USER SETTINGS

18       use_hashcash { 1 | 0 }   (default: 1)
19           Whether to use hashcash, if it is available.
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21       hashcash_accept user@example.com ...
22           Used to specify addresses that we accept HashCash tokens for.  You
23           should set it to match all the addresses that you may receive mail
24           at.
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26           Like whitelist and blacklist entries, the addresses are file-glob-
27           style patterns, so "friend@somewhere.com", "*@isp.com", or
28           "*.domain.net" will all work.  Specifically, "*" and "?" are
29           allowed, but all other metacharacters are not.  Regular expressions
30           are not used for security reasons.
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32           The sequence %u is replaced with the current user's username, which
33           is useful for ISPs or multi-user domains.
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35           Multiple addresses per line, separated by spaces, is OK.  Multiple
36           "hashcash_accept" lines is also OK.
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38       hashcash_doublespend_path /path/to/file   (default:
39       ~/.spamassassin/hashcash_seen)
40           Path for HashCash double-spend database.  HashCash tokens are only
41           usable once, so their use is tracked in this database to avoid
42           providing a loophole.
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44           By default, each user has their own, in their "~/.spamassassin"
45           directory with mode 0700/0600.  Note that once a token is 'spent'
46           it is written to this file, and double-spending of a hashcash token
47           makes it invalid, so this is not suitable for sharing between
48           multiple users.
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50       hashcash_doublespend_file_mode            (default: 0700)
51           The file mode bits used for the HashCash double-spend database
52           file.
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54           Make sure you specify this using the 'x' mode bits set, as it may
55           also be used to create directories.  However, if a file is created,
56           the resulting file will not have any execute bits set (the umask is
57           set to 111).
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61perl v5.32.1                      2021-0M3a-i2l5::SpamAssassin::Plugin::Hashcash(3)
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