When you access your email in Thunderbird the following error can occur:
Add Security Exception
You are about to override how Thunderbird identifies this site.
- When you open or send and receive email from Thunderbird the error is shown.
Thunderbird cannot verify the SSL certificate of the incoming or outgoing server and create a secure connection. This may be caused by Thunderbird using incorrect email settings.
Check your incoming and outgoing server names are set correctly in Thunderbird.