[vox-tech] Greylisting and LUGOD

Rod Roark rod at sunsetsystems.com
Tue Sep 14 10:57:57 PDT 2004


On Tuesday 14 September 2004 10:49 am, Chris Jenks wrote:
> 
> On Mon, 13 Sep 2004, Rod Roark wrote:
> 
> > I ran across this during my morning reading:
> >
> >   http://projects.puremagic.com/greylisting/whitepaper.html
> >
> > of which there seems to be a good Postfix implementation
> > (Postfix is my MTA of choice):
> >
> >   http://isg.ee.ethz.ch/tools/postgrey/
> >
> > So I'm seriously considering putting this on my server.
> [...]
> 
>   I don't quite understand. I read the whitepaper, and it sounded like the
> graylisting program is useful only for mail sent directly to the MTA to be
> forwarded elsewhere - such as an ISP that forwards the e-mail of its own
> users. Mail coming from relays is automatically forwarded, since there is
> no point in asking the relay to retry when you know it will. It seems that
> the ultimate recipient (the LUGOD mailing list, for example) can't make
> use of graylisting because the sending server is a relay. Am I missing
> something?

There's no relay.  Greylisting happens on one server which
runs both the MTA and the mailing list software.

-- Rod


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