I think I can field this one. ;)

Davide D'AMICO wrote:
> Hi,
> I'm using spamdyke and I like it a lot.
> I encountered two problems:
> 1) Isn't more useful to graylist senders using their ip address rather
> than only its
> email address, like this:
> /var/db/spamdyke/graylist/domain/rcpt/sender/ip_sender ?

Some large (think yahoo, gmail) mailers use server pools. Retries might be
sent from a different server, causing a message to be graylisted many times.

Personally, I think it'd be ok to use IPs for a type of whitelist after the
IP has passed graylisting. After all, once an IP has passed for one
domain/sender, wouldn't it pass for all other domain/senders too? However,
this adds another level of complexity (a pre- and a passed- gray list,
sometimes referred to as a dual key). If this proved to be a good method, a
global whitelist service based on the post-key (simply IP address), sort of
like RBLSs but RWLs, could be implemented. I don't know if anyone's pursued
such a thing or not. Seems feasible to me though.

> 2) if I include an ip address in a whitelist, I become a relay for
> that ip address because
> that ip address bypass ALL other filters?

No, because authentication is still required for non-local domains. Spamdyke
filters are only bypassed if/when the sender authenticates.

> Thanks in advance,
> Davide

-- 
-Eric 'shubes'
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