Re: [Exim] Re: SMTP protocol violation: synchronization erro…

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Szerző: Philip Hazel
Dátum:  
Címzett: Phil Chambers
CC: exim-users
Tárgy: Re: [Exim] Re: SMTP protocol violation: synchronization error (Exim4)
On Mon, 8 Jul 2002, Phil Chambers wrote:

> > Or do you mean send 5xx responses to all subsequent commands?
>
> I think it would have to be a case of sending 5xx to everything to prevent the
> likelyhood of the sender timing out waiting for a response.


You'd still need to drop the connection after x (more) commands, as
otherwise it makes DoS attacks even easier. I am not sure that I am
convinced that it is worth it.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.