Milter-greylist

--- In milter-greylist@yahoogroups.com, manu@n... wrote:

> > I have no real-life experience with milter interface, but maybe
> > xxfi_abort() vs. xxfi_eom() could be used to tell nondeliverable
> > messages from deliverable?
> 
> You might discover that a message was not deliverable (ie: you hit the
> rcpt stage but not the body stage), but you won't know is it's because
> the recipient does not exist or if the sender stopped there (for a
> callback mecanism, for instance).
> 
> Moreover, if the message has mulitple recipients (a common thing for
> spam), you won't notice some recipient were dropped. 

Ah, yes, I see...  Maybe milter interface should have had another set
of callback points, where MTA could tell the filter what it is going
to reply to the peer.

Anyway, as this information is used to update peer rating rather than
to make firm decisions, I think this approach still *can* be used: if
the remote regularily tries to send messages that MTA find completely
unacceptable, this is a hint that it may be wrong-doing.

Eugene