Removes the response handler.
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.
CRAM-MD5: [RFC2195]
Return true if this spec can require file.
The full path to the gem (install path + full name).