Re: [Asrg] Re: bounces, and anit-spam principles

On 2007-01-23 14:05:37 -0600, David Nicol wrote:
> On 1/23/07, Barry Shein <bzs(_at_)world(_dot_)std(_dot_)com> wrote:
> > Suffice it to say that we can add fast, capable mail servers and see
> > them flooded in a matter of hours.
> >
> > Pushing all the filtering to the end-user would make that much
> > worse.
> not the filtering, just the filter configuration.  MTA-resident complex
> content filtering with different per-recipient outcomes is not compatible
> with recipient enumeration preceding the data block;
It can still be done. It just needs a bit of trickery with 4xx replies.
It's ugly as hell, and it increases mail traffic (and CPU usage for
filtering), but it works.

> therefore the
> DATAFIRST ESMTP proposal I made some months ago.
I still like the LMTP model better, but having any method for returning
different results for different recipients based on the content would be
an improvement.

        hp

-- 
   _  | Peter J. Holzer    | I know I'd be respectful of a pirate 
|_|_) | Sysadmin WSR       | with an emu on his shoulder.
| |   | hjp(_at_)hjp(_dot_)at         |
__/   | http://www.hjp.at/ |    -- Sam in "Freefall"

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