exim host_lookup feature
I'm trying to understand the above feature on exim config.
Is it supposed to block unqualified senders, e.g., people using
ppp connection w/o reverse dns?
If it's not, is there such option?
More, is this an appropriate measure to reduce spam from
adsl/ppp/isdn connections without reverse dns registered?
Comments on this subject are welcome.
Mario O.de Menezes "Many are the plans in a man's heart, but
IPEN-CNEN/SP is the Lord's purpose that prevails"
http://curiango.ipen.br/~mario Prov. 19.21