If you log in to a mail-server with a self-issued certificate (may happen
with mailbox-protocol "POP3 (SSL)" or "IMAP (SSL)" only) yawebmail will
ask you to check the details of the given certificate.
The GUI
The input
"yes"-button:
Push the "yes"-button if you trust the given certificate.
"no"-button:
Push the "no"-button if you do not trust the given certificate. You will
get back to the login-screen.
