Puppet agent can't find server

I'm new to puppet, but picking it up quickly. Today, I'm running into an issue when trying to run the following: ``` $ puppet agent --no-daemonize --verbose --onetime **err: Could not request certificate: getaddrinfo: Name or service not known Exiting; failed to retrieve certificate and waitforcert is disabled** ``` It would appear the agent doesn't know what server to connect to. I could just specify `--server` on the command line, but that will be of no use to me when this runs as a daemon in production, so instead, I specify the server name in /etc/puppet/puppet.conf like so: ``` [main] server = puppet.<my domain> ``` I do have a DNS entry for `puppet.<my domain>` and if I `dig puppet.<my domain>`, I see that the name resolves correctly. All puppet documentation I have read states that the agent tries to connect to a puppet master at `puppet` by default and your options are host file trickery or do the right thing, create a CNAME in DNS, and edit the puppet.conf accordingly, which I have done. So what am I missing? Any help is greatly appreciated!