perfomance troubles

[Ugo Bellavance]

> -----Message d'origine-----
> De : Raymond Dijkxhoorn [mailto:raymond at PROLOCATION.NET]
> Envoyé : Thursday, October 23, 2003 7:17 PM
> À : MAILSCANNER at JISCMAIL.AC.UK
> Objet : Re: perfomance troubles
> 
> 
> Hi!
> 
> > On Thu, 2003-10-23 at 23:05, Hirsh, Joshua wrote:
> > > RBL checks were a big cause of slowdowns on my systems too, but by
> > >disabling them it fixed alot of the issues I was seeing.
> 
> > Many of the blacklists have recently shut down (read 'hounded out of
> > existence').  If you do want to check against RBL's make 
> sure that you
> > are only using ones that are 'alive' and that you are also running a
> > local caching DNS server.
> 
> And try to run RBLs localy also, if possible.

What is the difference of having a caching dns and running RBLs locally?

Ugo 

> Bye,
> Raymond.
>