title: Started to get error using nodemailer and mandrill smtp. CERT_HAS_EXPIRED Error: certificate has expired
body: <p>We are using nodemailer and mandrill smtp. </p>
  
  <p>Started today we got this error for few different web services</p>
  
  <pre><code>Error: { [Error: certificate has expired] code: 'CERT_HAS_EXPIRED' }
  </code></pre>
  
  <p>It happens for localhost and remote servers for different web applications
  What can be the reason?</p>
  
  <hr>
  
  <p>this was a problem on mandrill side</p>
  
  <p><strong>UPDATE</strong></p>
  
  <p>Expired Certificate Errors
  A roll out of new certificates last week has caused some users to experience problems sending mail—this was due to the expiration of the old certificate and an issue in our configuration. The users effected were sending through SMTP with STARTTLS. HTTPS API calls were not affected. We are currently working on a fix and will update when resolved. 
  12:21 PM UTC The configuration error was corrected at 12:05 UTC. SMTP with STARTTLS is now working correctly in all regions.
  December 18, 2015 12:04 PM UTC</p>