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spamassassin-users: Re: Difference in score returned and sum of

Re: Difference in score returned and sum of all points

From: Martin Gregorie <martin_at_nospam>
Date: Tue Oct 12 2010 - 11:08:56 GMT
To: users@spamassassin.apache.org

On Mon, 2010-10-11 at 23:37 -0700, Gnanam wrote:
> My question is, though SA reports 2.8 points at the top, on summing-up each
> points from the Content analysis details, it is only 2.7 points. Why SA is
> reporting/showing an increase by 0.1 point from its Content analysis details
> points sum?
>
The report truncates scores to one decimal point. Your report shows
several low scoring rules as 0.0 when they're almost certainly in the
range 0.01 to 0.09. Scores of +/-0.01 are commonly used for rules that
are used as meta components but shouldn't otherwise affect the score.

There's a clue staring yo in the face: NO-RELAYS will certainly have a
low negative score: -0.0 is an impossible value but the sort of thing
that truncating a value of -0.01 would give.

> Here is the
> Content analysis details: (2.8 points, 5.0 required)
>
> pts rule name description
> ---- ----------------------
> --------------------------------------------------
> -0.0 NO_RELAYS Informational: message was not relayed via SMTP
> 0.0 NORMAL_HTTP_TO_IP URI: Uses a dotted-decimal IP address in URL
> 0.7 HTML_IMAGE_ONLY_20 BODY: HTML: images with 1600-2000 bytes of words
> 0.0 HTML_MESSAGE BODY: HTML included in message
> 1.1 MIME_HTML_ONLY BODY: Message only has text/html MIME parts
> 0.6 HTML_MIME_NO_HTML_TAG HTML-only message, but there is no HTML tag
> 0.3 HTML_SHORT_LINK_IMG_3 HTML is very short with a linked image
> -0.0 NO_RECEIVED Informational: message has no Received headers

Martin