title: actionmailer "from" setting
body: <p>I am using ActionMailer and in my mailer model, I have a from set like this</p>
  
  <pre><code>default :from =&gt; "from@example.org"
  </code></pre>
  
  <p>In my environment.rb, I have a different username within</p>
  
  <pre><code>ActionMailer::Base.smtp_settings = {}
  </code></pre>
  
  <p>but I'd like the from address to override this.. so that the user sees only that. Is this possible? Additionally, when I change my settings within environment.rb, I don't see my changes take place... do I need to restart my rails server to refresh these settings?</p>
  
  <p>===
  here are some of my settings:</p>
  
  <pre><code>ActionMailer::Base.smtp_settings = {
  :tls =&gt; true,
  :address =&gt; "smtp.gmail.com",
  :port =&gt; "587",
  :domain =&gt; '==.org',
  :authentication =&gt; :plain,
  :user_name =&gt; '===',
  :password =&gt; '==='
  </code></pre>
  
  <p>}</p>