Alumna::SMTP::TLS
Inherits Enum < Comparable < Value < Object
How the connection is encrypted. Starttls: plain TCP, then STARTTLS before AUTH and MAIL (default port 587). A server that does not offer STARTTLS fails the send. No downgrade. Implicit: TLS from the first byte (default port 465). None: no TLS (default port 25). Only for a local or trusted network. No AUTH.
Constants
Starttls = 0
Implicit = 1
None = 2