Mail::ReceivedField.formatted_date throwing "invalid date" error (temp fix)

mail_received_field_formatted_date_patch

Mail::ReceivedField.class_eval do

  def formatted_date
    date_time.strftime("%a, %d %b %Y %H:%M:%S ") + date_time.zone.delete(':')
  rescue ArgumentError => e
    raise e unless "invalid date"==e.message
  end

end