On Thu, Oct 25, 2018 at 08:11:35AM +0200, Poliman - Serwis wrote:
> Hi. I heard that having a non-functional server as the primary MX is a
> well-known trick to reduce the amount of incoming spam, as most software
> used by spammers will only ever try the highest-priority MX. How to do this?
No. This is a myth, and reduces the reliability and performance
of legitimate email delivery. Use a decent RBL, postscreen(8) may
help to reduce the load on the server and keep smtpd(8) more available
for legitimate email.
--
Viktor.
