Re: [exim] ACL to drop connectio

Graeme Fowler wrote:
> On Fri, 2010-06-11 at 13:09 -0400, W B Hacker wrote:
>> That's quite elegant! (Given one understands '0' means 'infinity' here)
>
> Thanks. For "Understanding" replace with "the documentation for this
> option states that" :)
>
>> But is it 'cheap'?
>
> Not as "cheap" as not doing the lookup, obviously. And if you had a
> bazillion hosts/netblocks in your hostlist it would probably be quite
> slow; but if you had that, you'd be doing it wrong.
>
> The fact that it acts before any SMTP processing is done makes it pretty
> lightweight. Given that recipient verification further down the
> transaction will cost many times more resources, deferring connections
> before you've even sent a banner is worth a lot.
>
> So yes - it's "cheap".
>
> Graeme
>
>
>

Sells me.

Now ... if I only had any arrivals that needed such an exemption..

;-)

As neither a major ISP nor busy Uni, I don't...

But do see the value for those who do.

Thanks,

Bill