starttls-failure

starttls-failure is a variable defined in `starttls.el'.
Its value is

"\\*\\*\\* Handshake has failed"

Documentation:
*Regular expression indicating failed TLS handshake.
The default is what GnuTLS's "gnutls-cli" outputs.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 22.1 of Emacs.