title: An existing connection was forcibly closed by the remote host error with Connection Manager
body: <p>I am trying to connect to db server from ETL servers through SSIS package. Connection is not working from any ETL servers through SSIS. Below is the screenshot. Please let me know what I am missing.</p>
  <p>We also performed a test with the telnet client and test was successful.</p>
  <p><a href="https://i.stack.imgur.com/vb6QI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vb6QI.png" alt="Error Screenshot" /></a></p>
  <blockquote>
  <p>Error Message:Test Connection failed because of an error in
  initializing provider. Client unable to establish connection TCP
  provider. An existing connection was forcibly closed by the remote
  host.</p>
  </blockquote>