Mail::SpamAssassin::PlUser:Contributed)Mail::SpamAssassin::Plugin::Hashcash(3)NAMEMail::SpamAssassin::Plugin::Hashcash - perform hashcash verification
tests
SYNOPSIS
loadplugin Mail::SpamAssassin::Plugin::HashcashDESCRIPTION
Hashcash is a payment system for email where CPU cycles used as the
basis for an e-cash system. This plugin makes it possible to use valid
hashcash tokens added by mail programs as a bonus for messages.
USER SETTINGS
use_hashcash { 1 | 0 } (default: 1)
Whether to use hashcash, if it is available.
hashcash_accept user@example.com ...
Used to specify addresses that we accept HashCash tokens for. You
should set it to match all the addresses that you may receive mail
at.
Like whitelist and blacklist entries, the addresses are file-glob-
style patterns, so "friend@somewhere.com", "*@isp.com", or
"*.domain.net" will all work. Specifically, "*" and "?" are
allowed, but all other metacharacters are not. Regular expressions
are not used for security reasons.
The sequence %u is replaced with the current user's username, which
is useful for ISPs or multi-user domains.
Multiple addresses per line, separated by spaces, is OK. Multiple
"hashcash_accept" lines is also OK.
hashcash_doublespend_path /path/to/file (default:
~/.spamassassin/hashcash_seen)
Path for HashCash double-spend database. HashCash tokens are only
usable once, so their use is tracked in this database to avoid
providing a loophole.
By default, each user has their own, in their "~/.spamassassin"
directory with mode 0700/0600. Note that once a token is 'spent'
it is written to this file, and double-spending of a hashcash token
makes it invalid, so this is not suitable for sharing between
multiple users.
hashcash_doublespend_file_mode (default: 0700)
The file mode bits used for the HashCash double-spend database
file.
Make sure you specify this using the 'x' mode bits set, as it may
also be used to create directories. However, if a file is created,
the resulting file will not have any execute bits set (the umask is
set to 111).
perl v5.18.12011-Mail::SpamAssassin::Plugin::Hashcash(3)
