SSMTP documentation leads to loss of ssmtp.conf settings

After following the instructions at http://docs.engineyard.com/setup-ssmtp-for-mail-relay-to-authsmtp.html, I stopped and rebooted my app, only to find the ssmtp.conf file had been restored to its default settings. I was subsequently informed in a support ticket that I should be using the ssmtp chef recipe (https://github.com/engineyard/ey-cloud-recipes/tree/master/cookbooks/ssmtp).

Given this, it seems to me that the documentation at http://docs.engineyard.com/setup-ssmtp-for-mail-relay-to-authsmtp.html should be replaced with instructions to use the ssmtp chef recipe.