After update to version 170208-0 - can't get mail from server

Hello,

Yesterday I upgraded Avast to 170208-0 versión.
Since that I can’t receibe new emails from my account.
I use thunderbird. My Accounts are in a Zimbra server with SSL enabled and self signed certificates.

If I disable email protection from Avast I can receibe emails with no probems.

When email shield is activated,I can send messages, but receibe not. When I check emails on thunderbird it shows that there is no new mail.
No erros. No new messages.

Regards.