thias/puppet-postfix — pull request #16 by actionjack (2014-01-07 15:22:26+00:00)
Title: Added alternative options for enabling or disabling DNS lookup support (...

...for internal environments with no internal DNS)

I've got some internal machines that do not use DNS for email so this is to allow host file look ups to run without referring to DNS (for A and MX record checking).