ネコがはまる： 530 5.7.0 Must issue a STARTTLS command first

Rails Actionmailer を使って gmail からメール送信してみる。

config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
  :enable_starttls_auto => true,
  :address        => "smtp.gmail.com",
  :port           => 587,
  :domain         => "admin@xxxx.com",
  :authentication => :plain,
  :user_name      => "admin@xxxx.com",
  :password       => "xxxxxx" 
}

530 5.7.0 Must issue a STARTTLS command first と怒られる。 config/initializers/smtp_tls.rb とか、適当なファイルを作って、下記を入れる。

require "openssl"
require "net/smtp"
 
Net::SMTP.class_eval do
  private
  def do_start(helodomain, user, secret, authtype)
    raise IOError, 'SMTP session already started' if @started
    check_auth_args user, secret, authtype if user or secret
 
    sock = timeout(@open_timeout) { TCPSocket.open(@address, @port) }
    @socket = Net::InternetMessageIO.new(sock)
    @socket.read_timeout = 60 #@read_timeout
    @socket.debug_output = STDERR #@debug_output
 
    check_response(critical { recv_response() })
    do_helo(helodomain)
 
    raise 'openssl library not installed' unless defined?(OpenSSL)
    starttls
    ssl = OpenSSL::SSL::SSLSocket.new(sock)
    ssl.sync_close = true
    ssl.connect
    @socket = Net::InternetMessageIO.new(ssl)
    @socket.read_timeout = 60 #@read_timeout
    @socket.debug_output = STDERR #@debug_output
    do_helo(helodomain)
 
    authenticate user, secret, authtype if user
    @started = true
  ensure
    unless @started
      # authentication failed, cancel connection.
      @socket.close if not @started and @socket and not @socket.closed?
      @socket = nil
    end
  end
 
  def do_helo(helodomain)
    begin
      if @esmtp
        ehlo helodomain
      else
        helo helodomain
      end
    rescue Net::ProtocolError
      if @esmtp
        @esmtp = false
        @error_occured = false
        retry
      end
      raise
    end
  end
 
  def starttls
    getok('STARTTLS')
  end
 
  def quit
    begin
      getok('QUIT')
    rescue EOFError
    end
  end
end

これでＯＫ