On Thu, 2 Feb 2012, Tom Kinghorn wrote:
Good afternoon List.
Could anyone elaborate on the following rule.
I have tried searching for an explanation, without success.
TVD_SPACE_RATIO_MINFP
The base __TVD_SPACE_RATIO calls an eval:
eval:tvd_vertical_words('0','10')
It looks like it's checking for a text-to-space ratio that would indicate
vertical-words obfuscation to avoid text matching.
The _MINFP variant was my adding some FP avoidance rules (different ones
than in the TVD_SPACE_RATIO rule) to try to improve the performance of the
base rule.
http://ruleqa.spamassassin.org/?rule=%2FTVD_SPACE_RATIO
The _MINFP version is apparently performing better, and should probably
replace the base TVD_SPACE_RATIO rule.
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
jhar...@impsec.org FALaholic #11174 pgpk -a jhar...@impsec.org
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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