Can anybody explain how spam percents become numbers in amavisd.conf?

[jdell]

In the admin screen, there are kill and tag percents.

How do these values translate into the numeric values in /opt/zimbra/conf/amavisd.conf? Does changing the percents in the admin screen change these tag and kill numeric values?

Specifically, I'm talking about these amavisd.conf values:

$sa_tag_level_deflt  = -10.0;  # add spam info headers if at, or above that level
$sa_tag2_level_deflt = 6.6; # add 'spam detected' headers at that level
$sa_kill_level_deflt = 15; # triggers spam evasive actions
$sa_dsn_cutoff_level = 15;    # spam level beyond which a DSN is not sent
$sa_quarantine_cutoff_level = 15;  # spam level beyond which quarantine is off

Do these numbers (6.6 and 15) come from the admin page defaults of 33% and 75% respectively?

Also, I see the amavisd.conf.in has variables where the numeric levels go that take these percents. What does this file do?

I've used amavisd-new and SpamAssassin before, but I'm just not familiar with this percent representation of the tag/kill.

Any help/explanation greatly appreciated!

[anteos]

20 points = 100%

6,6 = 33% of 20
15 = 75% of 20

[jdell]

Originally Posted by anteos

20 points = 100%

6,6 = 33% of 20
15 = 75% of 20

Ahh, okay. I guess the score of 20 = 100% is totally arbitrary. I quite often receive spam with scores higher than 20. Though in practice, rarely higher than 30.

The GTUBE test (http://spamassassin.apache.org/gtube/) will return a spam score of 1000 which I believe is the highest spam score you can get with SpamAssassin. Hence, the reason the percents didn't make any sense to me.

Thanks!