title: Postfix Doesn't Send Mail with Vagrant DNS Host Resolver On
body: <p>I'm on a Mac computer. I have a vagrant VM with Postfix installed that doesn't send e-mails when Vagrant's DNS Host resolver is turned on. The Nat DNS Host resolver fixes all sorts of errors that WordPress spits out without the host resolver so I need it. How can I fix Postfix without causing WordPress to start acting funny?</p>
  
  <p>Code in Vagrantfile causing the problem:</p>
  
  <pre><code>config.vm.provider "virtualbox" do |v| 
    v.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
  end
  </code></pre>