On Mon, 31 Aug 2009 18:17:51 -0400
MySQL Student <mysqlstud...@gmail.com> wrote:

> Hi all,
> 
> I'm trying to understand how shortcircuit works to ease some of the
> load on the severs. First, does anyone have any recommended metas that
> they use in their environment that might help?
> 
> Can I add shortcircuit to an existing rule, or does the rule have to
> be designed to be used with shortcircuit? In other words, I have a
> meta that combines spamcop with spamhaus:
> 
> meta    META_HAUS_COP           (RCVD_IN_BL_SPAMCOP_NET &&
> RCVD_IN_XBL) describe META_HAUS_COP          Contains SPAMHAUS XBL
> and SPAMCOP score   META_HAUS_COP           0 4.0 0 4.0
> shortcircuit META_HAUS_COP      spam

Does that actually work? RCVD_IN_BL_SPAMCOP_NET is a deep check, but
RCVD_IN_XBL runs only on the last-external, so it rarely hits anything
if the MX server is rejecting on zen. 

> In order for it to be actually shortcircuited, however, I have to make
> the score 100, correct?

I don't think so, it's just that if you don't define a score, a
short-circuited rule scores +/- 100 by default. 

see perldoc Mail::SpamAssassin::Plugin::Shortcircuit

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