java - 通过 java MAIL API 从特定的 UNIX 机器发送电子邮件

Question

我有下面的java程序，用于通过java Mail API成功发送邮件，现在我的这个程序部署在名为lonabc1123的unix机器上，并且这个unix盒子有一个ip 11.111.11.11，现在我想在这里限制某些事情，那就是只有当程序在这个unix盒子itsef(lonabc1123)上运行时才会发送java邮件，现在任何人都可以发送邮件除了这个 UNIX 盒子我的意思是有人也可以从其他 UNIX 盒子机器发送邮件。

所以请告诉我，我知道邮件是从名为lonabc1123的unix机器发送的，它的IP地址为11.111.11.11，除此之外没有人可以从任何其他机器发送邮件，所以我怎样才能扭转下面的代码片段该邮件只会从一个unix盒子发送，即lonabc1123，其IP为11.111.11.11，我可以进行基于IP的检查，在发送邮件之前我将检查IP，请告知

static String smtpHost = "11.162.90.80";
static String mailSmtpPort = "1965";
static String mailTo[] = {"ena@abs.com" };
static String mailCc[] = {"ena@abs.com" };
static String bccAddress[] = null;

public static void main(String [] args) throws Exception, IOException, Exception{



    postEmail(mailTo, mailCc, "k",
            "testSubject", "Body123", smtpHost , mailSmtpPort);


}  



public static  void postEmail(String mailTo[], String mailCc[], String from, String subject, String text, String smtpHost, String mailSmtpPort ) throws Exception, DocumentException, IOException {
    try {
        Properties properties = new Properties();
        properties.put("mail.smtp.host", smtpHost);
        properties.put("mail.store.protocol", "imaps");
        properties.put("mailSmtpPort", mailSmtpPort);
        //obtaining the session
        Session emailSession = Session.getDefaultInstance(properties);

        //Enable for debuging 
        emailSession.setDebug(true);

        Message emailMessage = new MimeMessage(emailSession);


        if(mailTo!= null){
            InternetAddress[] addressTo = new InternetAddress[mailTo.length];
            for (int i = 0; i < mailTo.length; i++) {
                addressTo[i] = new InternetAddress(mailTo[i]);
            }
            emailMessage.setRecipients(RecipientType.TO, addressTo);
        }

        InternetAddress[] addresscc = new InternetAddress[mailCc.length];
        for (int i = 0; i < mailCc.length; i++) {
            addresscc[i] = new InternetAddress(mailCc[i]);
        }
        emailMessage.setRecipients(RecipientType.CC, addresscc);

         emailMessage.setFrom(new InternetAddress(from));
         emailMessage.setSubject(subject);

         emailMessage.setContent(text, "text/html");


          //Create the message part
        BodyPart messageBodyPart = new MimeBodyPart();
        messageBodyPart.setContent(text, "text/html");

               messageBodyPart.setText(text);

         // Create a multipart message
        Multipart multipart = new MimeMultipart();
         multipart.addBodyPart(messageBodyPart);

          //  attachment part
             MimeBodyPart attachPart = new MimeBodyPart();
             String filename = "c:\\swap.xls";





            multipart.addBodyPart(attachPart);
           // Send the complete message parts
            emailMessage.setContent(multipart);


      Transport.send(emailMessage);
    }    catch (AddressException e) {
        e.printStackTrace();
    } catch(MessagingException messagingException) {
        messagingException.printStackTrace();
        throw new Exception(messagingException.getMessage());
    }
}

Answer 1

if (!java.net.InetAddress.getLocalHost().getHostAddress().equals("11.11.11.11")) ... // fail