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b9de28e910
- configures dovecot to use the spamtest sieve plugins
- configures sieve to read the score from X-Spamd-Result: headers
- before.sieve applies the ${spam_threshold} to the spamtest percentage
- freeposte.db stores a percentage for ${spam_threshold}
- migrate freeposte.db spam_threshold from X/15 to percentages
the filter investigates the overall ratio of the `rspamd` header
`X-Spamd-Result` that looks something like this:
X-Spamd-Result: default: True [12.36 / 15.00]
RBL_SPAMHAUS_XBL(4.00)[]
BAYES_SPAM(3.06)[92.67%]
RBL_SPAMHAUS_XBL_ANY(4.00)[]
ONCE_RECEIVED_STRICT(4.00)[]
HFILTER_HELO_BAREIP(3.00)[]
RBL_SORBS_DUL(2.00)[]
HFILTER_HOSTNAME_UNKNOWN(2.50)[]
RBL_SPAMHAUS_PBL(2.00)[]
RBL_SORBS_RECENT(1.50)[]
MIME_UNKNOWN(0.10)[application/x-rar-compressed]
RDNS_NONE(1.00)[]
RBL_SORBS(0.00)[]
R_SPF_NEUTRAL(0.00)[?all]
ONCE_RECEIVED(0.10)[]
RBL_SEM(1.00)[]
MIME_HTML_ONLY(0.20)[]
RBL_UCEPROTECT_LEVEL1(1.00)[]
MIME_GOOD(-0.10)[multipart/mixed]
the sieve `spamtest :percent :value` in this case would be
100*12.36/15 = 82.4%
29 lines
701 B
Sieve
29 lines
701 B
Sieve
require "variables";
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require "vacation";
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require "fileinto";
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require "envelope";
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require "mailbox";
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require "imap4flags";
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require "regex";
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require "relational";
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require "comparator-i;ascii-numeric";
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require "vnd.dovecot.extdata";
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require "spamtestplus";
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if allof (string :is "${extdata.spam_enabled}" "1",
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spamtest :percent :value "gt" :comparator "i;ascii-numeric" "${extdata.spam_threshold}")
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{
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setflag "\\seen";
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fileinto :create "Junk";
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stop;
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}
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if string :is "${extdata.reply_enabled}" "1" {
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vacation :days 1 :subject "${extdata.reply_subject}" "${extdata.reply_body}";
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}
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if string :is "${extdata.forward_enabled}" "1" {
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redirect "${extdata.forward_destination}";
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keep;
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}
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