Android email client stopped sending mail?

Question

Android

Something in my mail stopped in Android sent through a standard mailer (HTC DHD), mail on Yandex. Writes to me that:

Предупреждение системы безопасности<br/>
<br/>
Проблемы с сертификатом безопасности для этого веб-сайта.<br/>
Этот сертификат не от надежного поставщика.

Certificate from GTE CyberTrust Global Root
Has anyone encountered this?

Answer 1

I think the news on opennet will clear things up.

Answer 2

Today, I have installed an update of root certificates like certificates on Windows, apparently someone somewhere again stole the certificate, and the main centers depersonalized it. It was the same with the stolen certificates from Comodo and one of the other days from one "office".