The default port to use for HTTPS requests; defaults to 443.
The default port for IMAPS connections, port 993
The default port for POP3 connections, port 110
The default port for POP3S connections, port 995
The default SMTPS port number, 465.
true if server advertises AUTH PLAIN. You cannot get valid value before opening SMTP session.
true if server advertises AUTH LOGIN. You cannot get valid value before opening SMTP session.
Returns supported authentication methods on this server. You cannot get valid value before opening SMTP session.
Enables SMTP/TLS (STARTTLS) for this object if server accepts. context is a OpenSSL::SSL::SSLContext object.