On 30 Nov 2001, James Antill wrote:
> > - caching of positive callbacks (by far #1)
> > (I do not really want caching of negative results, as I'd rather have
> > people who just fixed their mail server be able to send right away)
>
> This might be nice, the problem is that one of the benefits of
> callback support is that if someone does a spam from an ISP account
> and the ISP then kill that customers account then you instantly stop
> getting their spam.
Quite.
> I guess as with all caching the big question is how long to you cache
> for.
Exactly. I have been pondering this, and it seems to me that there is no
obvious answer.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
