Dear Maintainer,

Because Let's Encrypt has been signed the new certificate with the gen-y
root certificate, would you please include the new Root CA from Let's
Encrypt? At the moment, we got problem with Thunderbird, etc. because the
certificate isn't trusted.

https://letsencrypt.org/certs/gen-y/root-ye.pem
https://letsencrypt.org/certs/gen-y/root-yr.pem

Thank you and regards,

Daniel Sugondo.