Adds rules to package nullmailer, a relay-only MTA (alternative to ssmtp).
Also available as a branch on github: http://github.com/ChoHag/openwrt-packages
Signed-off-by: Matthew King <matthew.king@monnsta.net>
git-svn-id: svn://svn.openwrt.org/openwrt/packages@19190 3c298f89-4303-0410-b956-a3cf2f4a3e73
