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From Axb <>
Subject Re: "Pill" spams
Date Tue, 10 Apr 2012 19:16:15 GMT
On 04/10/2012 08:07 PM, Rob McEwen wrote:

>      (b) If anyone programs this idea into SA, or anywhere else, then
>      this should be a separate step AFTER regular URI
>      the message a chance to "short circuit" out of processing if it
>      already scored high enough after URI checking. Why? Because this
>      would defeat some of the benefits of fast URI checking if it was
>      done in tandem with the URI checking. Basically, URI checking can be
>      lightening fast... especially if you are checking the extracted URIs
>      against a local rbldnsd server. In contrast, anytime you do a name
>      server lookup to some stranger's domain, you're subjecting yourself
>      to the mercy of their reply speed... and many of those spammers use
>      screwed up and/or overloaded equipment. (even if your DNS timeout
>      setting becomes a "safety net", that is still order of magnitudes
>      slower than rbldnsd checking!)

afaik, SA does async lookups so you have next to no delay - negligible

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