title: OpenPop.Net Exception
body: <p>I am using OpenPop.net in my application. What this application does is that it downloads mails from a pop3 account saves all the attachments (CSV files) and processes them. This processing takes a lot of time. I am getting this exception which I am not able to figure out:</p>
  
  <pre class="lang-none prettyprint-override"><code>Exception message: OpenPop.Pop3.Exceptions.PopServerException: The stream used to retrieve responses from was closed
     at OpenPop.Pop3.Pop3Client.IsOkResponse(String response)
     at OpenPop.Pop3.Pop3Client.SendCommand(String command)
     at OpenPop.Pop3.Pop3Client.DeleteMessage(Int32 messageNumber)
  </code></pre>
  
  <p>At the end of processing the CSV, the mails are deleted from the pop3 account. I believe this is where this exception is happening.</p>