nntplib.NNTP.starttls()

NNTP.starttls(ssl_context=None)

Send a STARTTLS command. This will enable encryption on the NNTP connection. The ssl_context argument is optional and should be a ssl.SSLContext object. Please read Security considerations for best practices.

Note that this may not be done after authentication information has been transmitted, and authentication occurs by default if possible during a NNTP object initialization. See NNTP.login() for information on suppressing this behavior.