Rob van Dam put forth on 12/30/2010 3:25 PM: > Seems Centos 5.5 is shipping an old version of Postfix.
Debian Stable has a reputation of shipping with dinosaur packages. CentOS ships with stuff that existed before the first DNA chains appeared in the primordial soup. :) Luckily for you Simon Mudd makes newer Posftix RPMs for RHEL/CentOS: http://postfix.wl0.org/en/available-packages/ You'll want the Postfix 2.5 package for RHEL5. -- Stan
