title: Mandrill email not send from local app
body: <p>I have configured my local environment as like this</p>
  
  <pre><code>config.action_mailer.smtp_settings = {
    address: "smtp.mandrillapp.com",
    port: 587,
    domain: ENV["DOMAIN_NAME"],
    authentication: "plain",
    enable_starttls_auto: true,
    user_name: "username",
    password: "api key
  }
  </code></pre>
  
  <p>When I send email from my app I got this error</p>
  
  <p><code>Net::SMTPServerBusy in MailsController#import</code>
   <code>401 Syntax: HELO hostname</code></p>
  
  <p>when I change config from <code>mandrill</code> to <code>gmail</code>, I can send email from my app. I dont know what's wrong.</p>
  
  <p>Thanks for your time.</p>