docs: private boolean sendErrorMail(String content, String title) {
  
          String localName = "";
  
          try {
  
              InetAddress addr = InetAddress.getLocalHost();
              localName = addr.getHostName().toString();
  
          } catch (UnknownHostException e) {
  
              LOG.warn("When send alarm mail,we can't get hostname", e);
          }
  
          String mailTitle = localName + " /" + ALARM_MAIL_TITLE + "/" + getSystemDate();
  
          int len = 0;
          int lenLimit = ALARM_MAIL_TITLE_LENGTH;
          if (title != null) {
              len = title.length();
              if (len > lenLimit) {
                  len = lenLimit;
              }
              mailTitle += title.substring(0, len);
          }
  
          String mailTo = emailProperties.getEmailReceiver();
          String mailFrom = emailProperties.getFromEmail();
          String[] mailToList = mailTo.split(";");
  
          if (content == null) {
  
              return false;
  
          } else {
  
              try {
                  mailBean.sendHtmlMail(mailFrom, mailToList, mailTitle, content);
              } catch (Exception e) {
                  LOG.warn("When send alarm mail,we can't send it", e);
                  return false;
              }
          }
          return true;
      }