title: Mac OS X 10.10 Yosemite Postfix SASL authentication failed
body: <p>I followed the step described in the link below to setup my mac to send out email. 
  <a href="http://www.anujgakhar.com/2011/12/09/using-macosx-lion-command-line-mail-with-gmail-as-smtp/">http://www.anujgakhar.com/2011/12/09/using-macosx-lion-command-line-mail-with-gmail-as-smtp/</a></p>
  
  <p>It was working fine on my Mac OS X 10.9. But after I upgraded to OS X 10.10. The mail.log showed the following error. What is the problem?</p>
  
  <pre><code>Oct 19 00:28:22 paullam-macbook-pro.local postfix/smtp[30383]: 6B47B8AD4E8: SASL authentication failed; cannot authenticate to server smtp.gmail.com[74.125.68.109]: generic failure
  Oct 19 00:28:24 paullam-macbook-pro.local postfix/smtp[30383]: 6B47B8AD4E8: to=&lt;zzpaul@gmail.com&gt;, relay=smtp.gmail.com[74.125.68.108]:587, delay=3.4, delays=0.01/0/3.4/0, dsn=4.7.0, status=deferred (SASL authentication failed; cannot authenticate to server smtp.gmail.com[74.125.68.108]: generic failure)
  </code></pre>