RE: [Exim] FW: Defending Against Rumplestiltskin Attacks???

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Autor: Ilan Aisic
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A: 'Mike 'Fraz' White', exim-users
Assumpte: RE: [Exim] FW: Defending Against Rumplestiltskin Attacks???
Hi again,
IMHO, returning a bounce on a common typo is essential to the business.
I'm worried that customers and all other legit people from the outside will send email to my domain that will evaporate
into nulldom and some important mail will disappear and cause misunderstandings at best.
I don't see why this policy would be different if you have 5 users or 5000.
Setting some common typos in the alias file seems like a good idea only for the case you don't send bounces at all (and
is only practical for small systems). Even then, it may perpetuate and propagate mistakes.

--
Ilan Aisic


> -----Original Message-----
> From: Mike 'Fraz' White [mailto:fraz@smartowner.co.uk]
> Sent: Sunday, May 09, 2004 8:34 PM
> To: 'Ilan Aisic'; exim-users@???
> Subject: RE: [Exim] FW: Defending Against Rumplestiltskin Attacks???
>
>
>
>
> > -----Original Message-----
> > From: exim-users-admin@???
> [mailto:exim-users-admin@exim.org] On
> > Behalf Of Ilan Aisic
> > Sent: 09 May 2004 17:30
> > To: 'Mike 'Fraz' White'; exim-users@???
> > Subject: RE: [Exim] FW: Defending Against Rumplestiltskin Attacks???
> >
> > Oh, I see your point and you're right.
> > However, I probably don't understand how you configure Exim if the
> > "catchall" is last, I don't see how you send a bounce message ( 550
> > Unknown user) to a non-spammer who made a typo in the
> addressee name?
> >
> Simple answer, I don't. If there's a typo then it's just tough luck.
>
> I've only got a very small system running with a max of about
> 50 users although some of them are setup with common typos in
> the aliases file
> :-)
>
> --
> Mike 'Fraz' White
> www.smartowner.co.uk
>
>