HubSpot RSS Feed not validating with


The Hubspot RSS feed provided in the content setting is not being validated correctly with and this is causing submission issues for a client when they are trying to submit the feed to sites such as

When trying to be validated, the following error occurs

Server returned [Errno 1] _ssl.c:504: error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure

Is there a way to customize the feed that is presented in the content editor RSS feed link?