Problems with setting up email accounts

I was successfully creating an email account, but when I list it I am getting the error:
SSL for email is not configured properly, you may get Self-Signed error on mail clients such as Outlook and Thunderbird. More details here.

Pressing the Fix Now button creates the error: Websites matching query does not exist.

I am able to send emails from the webmail interface, but I was not able to receive any message.

When I try to delete an email account I get the error:
Cannot delete email account. Error message: ‘NoneType’ object has no attribute ‘domain’

Current Version:
2.3
Build:
9
Current Commit:
6f28d39a591b5e08aac6adfcc59b642a58622ea2