Could not Create Gmail Mailbox In Vtiger
<p>I could't create mailbox with gmail in Vtiger CRM version 6.3.0. It alerted 'No route to host'. </p>

<p><a href="https://i.stack.imgur.com/A2hC3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/A2hC3.png" alt="enter image description here"></a></p>