[Roto Rooters] RE: [spambayes-dev] Re: Generating SB tokens based upon information onthe net

Sean Reifschneider jafo at tummy.com
Wed Aug 4 22:28:48 CEST 2004

On Wed, Aug 04, 2004 at 10:51:37PM +0400, Brad Knowles wrote:
>	The DNS lookup time can be significant.  That's true.  That's 
>part of why you want to mirror all the DNSBLs that you use so that 
>you can query them locally, as opposed to having to go across the 

What SpamAssassin does it to send out all the DNSBL queries at once, and
then it determins how long it will wait for responses.  The spamassassin
man page has information on the specifics, but it's something like this:

   If after a second we have 90% of the responses, don't listen for any

   If after 2 seconds we have 80%...
   If after 5 seconds we have 60%...
   If after 10 seconds we have 40%...
   Terminate after 30 seconds.

 If we don't survive, we don't do anything else.
                 -- John Sinclair
Sean Reifschneider, Member of Technical Staff <jafo at tummy.com>
tummy.com, ltd. - Linux Consulting since 1995.  Qmail, Python, SysAdmin

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