Returns the block diagonal eigenvalue matrix D
Opens a POP3
session, attempts authentication, and quits.
This method raises POPAuthenticationError
if authentication fails.
POP3
Net::POP3.auth_only('pop.example.com', 110, 'YourAccount', 'YourPassword')
APOP
Net::POP3.auth_only('pop.example.com', 110, 'YourAccount', 'YourPassword', true)
Starts a pop3 session, attempts authentication, and quits. This method must not be called while POP3
session is opened. This method raises POPAuthenticationError
if authentication fails.
true if server advertises STARTTLS. You cannot get valid value before opening SMTP
session.
true if this object uses STARTTLS when server advertises STARTTLS.
Enables SMTP/TLS (STARTTLS) for this object. context
is a OpenSSL::SSL::SSLContext
object.
Disables SMTP/TLS (STARTTLS) for this object. Must be called before the connection is established to have any effect.