On 2013.08.06 15.34, John Allen wrote:
Is there a more up to date guide that I could reference as I review my existing setup.
it's unlikely you'll get much endorsement here of arbitrary howtos or guides. instead, i'd encourage you to simply share your config [postconf -nf; postconf -Mf], and solicit a critique.
Debian does not seem to include Postscreen
what gives you this impression? the 2.10 debian package i'm familiar with does.
-ben