Re: [exim] Data ACL - Received: from header

> From: W B Hacker

> > The botnet endures 20s delay in RCPT ACL. I don't want to try longer delays
> > because of limited memory of the cheap VPS/VDS ($6/month for
> > 64M RAM and 128M swap for Exim, webserver, POP3 server and BIND).
>
> On austere hardware you may want to run some comparison tests along the lines of
> seeing which actually hits the resources hardest:
>
> - the above, intensively complex set of conditionals.

On my VPS/VDS, virtual CPU (300 MHz) usage is less than 1%
(including Exim and webserver with Perl CGI).
RAM expense for those 20s or more is very much more burdensome.