Re: [exim-dev] HELO cache

Kezdőlap
Üzenet törlése
Válasz az üzenetre
Szerző: Simon Arlott
Dátum:  
Címzett: exim-dev
Tárgy: Re: [exim-dev] HELO cache
On 22/07/06 21:37, Jakob Hirsch wrote:
> Quoting Simon Arlott:
>
>> Someone might find this useful, it tracks the most recent unique HELO
>> names used per IP and the times they were last used - spam zombies
>> become very obvious with this information.
>
> Nice idea. I didn't look at the code, but at first glance I'd say the
> same could already be done with Exim's builtin functions and some
> database backend (e.g. sqlite as a simple one).
>
>


It could, but then you'd miss the completely bogus HELO names that fail syntactic checks:

2006-07-07 02:58:45 rejected HELO from [221.202.166.166]:4560: syntactically invalid argument(s): \274\315\327\334
2006-07-07 02:58:48 H=(1aek.viyeyef1.ameritech.net) [221.202.166.166]:4694 F=<Charley.Grant@???> rejected RCPT <*@*>: dnslist xbl.spamhaus.org/221.202.166.166

--
Simon Arlott