stop spam from made-up domains
Saturday, June 17th, 2006Recently I was poking around a very spam-besieged server running RedHat Linux and noticed that the default sendmail configuration included these lines:
dnl # We strongly recommend not accepting unresolvable domains if you want to
dnl # protect yourself from spam. However, the laptop and users on computers
dnl # that do not have 24x7 DNS do need […]