Ufdjrw

First of all I use glassfish4 server. When I try to send an e-mail from my web test app I get an exception that usually says:

javax.mail.MessagingException: Could not connect to SMTP host:
mail.host.com, port: 465, response: -1

(i also got another exception but I don't remember them), but from my SE application, it sends the e-mail correctly everytime. Also my coworker has the same code as I on his computer and the code works. I also tried to send an email with smtp.gmail.com and it works like charm, but when I try with our private server it does not work.

Here is the code from my web app:

 @WebServlet("/email")
public class Email extends HttpServlet
 private static final String SUBJECT = "TEST";
 private static final String CONTENT = "<h1>HI</h1>"
 + "<header style='width: 100%; height=20vh; background: #ffdd1a; color: #383e72;'>"
 + "<h1>TEST</h1>"
 + "<h2>KTHXBYE</h2>"
 + "</header>";

 @Override
 protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException 
 String name = req.getParameter("name"),
 eMail = req.getParameter("eMail"),
 server = req.getParameter("server"),
 port = req.getParameter("port"),
 encryption = req.getParameter("encryption"),
 mailTo = req.getParameter("mailTo");
 final String username = req.getParameter("username"),
 pass = req.getParameter("pass");
 resp.setCharacterEncoding("UTF-8");
 Session session;

 // setup acc props
 Properties props = System.getProperties();
 props.put("mail.smtp.host", server);
 props.put("mail.smtp.port", port);
 props.put("mail.smtp.auth", "true");
 props.put("mail.transport.protocol", "smtp");

 switch (povezava) 
 case "SSL":
 props.put("mail.smtp.socketFactory.port", "port");
 props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
 break;
 case "TLS":
 props.put("mail.smtp.starttls.enable", "true");
 break;
 case "NONE":
 props.put("mail.smtp.ssl.enable", "false");
 props.put("mail.smtp.starttls.enable", "false");
 props.put("mail.smtp.ssl.trust", server);
 break;
 default:
 resp.getWriter().print("ERROR");
 return;
 

 Authenticator auth = new Authenticator() 
 @Override
 protected PasswordAuthentication getPasswordAuthentication() 
 return new PasswordAuthentication(username, pass);
 
 ;

 // create msg
 session = Session.getDefaultInstance(props, auth);
 session.setDebug(true);

 MimeMessage message = new MimeMessage(session);
 try 
 try 
 message.setFrom(new InternetAddress(eMail, name));
 message.setSubject(SUBJECT);
 MimeMultipart multipart = new MimeMultipart("related");
 BodyPart bodyPart = new MimeBodyPart();
 bodyPart.setContent(CONTENT, "text/html; charset=utf-8");
 multipart.addBodyPart(bodyPart);
 message.setContent(multipart);
 // send msg
 message.setRecipient(Message.RecipientType.TO, new InternetAddress(mailTo));
// Transport transport = session.getTransport("smtp");
// transport.connect(server, username, pass);
// transport.sendMessage(message, message.getAllRecipients());
 Transport.send(message);
 resp.getWriter().print("Mail was send successfully");
 return;
 catch (MessagingException ex) 
 Logger.getLogger(Email.class.getName()).log(Level.SEVERE, null, ex);
 
 catch (UnsupportedEncodingException ex) 
 Logger.getLogger(Email.class.getName()).log(Level.SEVERE, null, ex);
 
 resp.getWriter().print("Sending mail failed");
 

Stack trace from upper code:

javax.mail.MessagingException: Could not connect to SMTP host: mail.host.com, port: 465, response: -1
 at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2042)
 at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:697)
 at javax.mail.Service.connect(Service.java:386)
 at javax.mail.Service.connect(Service.java:245)
 at javax.mail.Service.connect(Service.java:194)
 at javax.mail.Transport.send0(Transport.java:253)
 at javax.mail.Transport.send(Transport.java:124)
 at com.zarja.testmail.Email.doPost(Email.java:113)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
 at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
 at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
 at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
 at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
 at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
 at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
 at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
 at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
 at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
 at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
 at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
 at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
 at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
 at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
 at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
 at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
 at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
 at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
 at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
 at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
 at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
 at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
 at java.lang.Thread.run(Thread.java:748)

Now my SE app code:

public static void main(String[] args) 
 System.out.println(sendMyMail());
 

 public static String sendMyMail() 
 try 
 String from = "mailaddress"; // not actual mail
 String pass = "password";
 Authenticator auth = new Authenticator() 
 @Override
 protected PasswordAuthentication getPasswordAuthentication() 
 return new PasswordAuthentication(from, pass);
 
 ;

 Session session;
 //setup account properties
 Properties props = System.getProperties();
 props.put("mail.smtp.host", "mail.host.com");
 props.put("mail.smtp.socketFactory.port", "465");
 props.put("mail.smtp.socketFactory.class",
 "javax.net.ssl.SSLSocketFactory");
 props.put("mail.smtp.auth", "true");
 props.put("mail.smtp.port", "465");

 session = Session.getDefaultInstance(props, auth);
 session.setDebug(true);
 MimeMessage message = new MimeMessage(session);
 message.setFrom(new InternetAddress(from, "TEST"));
 message.setSubject(SUBJECT);
 MimeMultipart multipart = new MimeMultipart("related");
 BodyPart messageBodyPart = new MimeBodyPart();
 messageBodyPart.setContent(CONTENT, "text/html; charset=utf-8");
 multipart.addBodyPart(messageBodyPart);
 message.setContent(multipart);
 //send message
 try 
 message.setRecipient(Message.RecipientType.TO, new InternetAddress("host@gmail.com"));
 // Transport transport = session.getTransport("smtp");
 // transport.connect("mail.host.com", from, pass);
 // transport.sendMessage(message, message.get

AllRecipients());
 Transport .send(message);
 return "SENT";
 catch (Exception e) 
 e.printStackTrace();
 
 catch (Exception e) 
 e.printStackTrace();
 
 return "FAILED";
 

Thanks for the help in advance!

EDIT (how the code should actualy look):

protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException 
 String name = req.getParameter("name"),
 eMail = req.getParameter("eMail"),
 server = req.getParameter("server"),
 port = req.getParameter("port"),
 encryption = req.getParameter("encryption"),
 mailTo = req.getParameter("mailTo");
 final String username = req.getParameter("username"),
 pass = req.getParameter("pass");
 resp.setCharacterEncoding("UTF-8");
 Session session;

 // setup acc props
 Properties props = System.getProperties();
 props.put("mail.smtp.host", server);
 props.put("mail.smtp.port", port);
 props.put("mail.smtp.auth", "true");
 props.put("mail.transport.protocol", "imap");

 switch (enryption) 
 case "SSL":
 props.put("mail.smtp.ssl.enable", "true");
 break;
 case "TLS":
 props.put("mail.smtp.starttls.enable", "true");
 break;
 case "NONE":
 props.put("mail.smtp.ssl.enable", "false");
 props.put("mail.smtp.starttls.enable", "false");
 props.put("mail.smtp.ssl.trust", server);
 break;
 default:
 resp.getWriter().print("ERROR");
 return;
 

 // create msg
 session = Session.getInstance(props);
 session.setDebug(true);

 MimeMessage message = new MimeMessage(session);
 try 
 try 
 message.setFrom(new InternetAddress(eMail, name));
 message.setSubject(SUBJECT);
 MimeMultipart multipart = new MimeMultipart("related");
 BodyPart bodyPart = new MimeBodyPart();
 bodyPart.setContent(CONTENT, "text/html; charset=utf-8");
 multipart.addBodyPart(bodyPart);
 message.setContent(multipart);
 // send msg
 message.setRecipient(Message.RecipientType.TO, new InternetAddress(mailTp));
 Transport transport = session.getTransport("imap");
 transport.connect(streznikPoste, uporabniskoIme, geslo);

 Transport.send(message);
 resp.getWriter().print("Mail was send successfully");
 return;
 catch (MessagingException ex) 
 Logger.getLogger(Email.class.getName()).log(Level.SEVERE, null, ex);
 
 catch (UnsupportedEncodingException ex) 
 Logger.getLogger(Email.class.getName()).log(Level.SEVERE, null, ex);
 
 resp.getWriter().print("Sending mail failed");
 

EDIT FIX (this seems to work):

protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException 
 String name = req.getParameter("name"),
 eMail = req.getParameter("eMail"),
 server = req.getParameter("server"),
 port = req.getParameter("port"),
 encryption = req.getParameter("encryption"),
 mailTo = req.getParameter("mailTo");
 final String username = req.getParameter("username"),
 pass = req.getParameter("pass");
 resp.setCharacterEncoding("UTF-8");
 Session session;

 // setup acc props
 Properties props = System.getProperties();
 props.put("mail.smtp.host", server);
 props.put("mail.smtp.port", port);
 props.put("mail.smtp.auth", "true");
 props.put("mail.transport.protocol", "smtp");
 props.put("mail.smtp.ssl.trust", server);

 switch (encryption) 
 case "SSL":
 props.put("mail.smtp.ssl.enable", "true");
 break;
 case "TLS":
 props.put("mail.smtp.starttls.enable", "true");
 break;
 case "NONE":
 props.put("mail.smtp.ssl.enable", "false");
 props.put("mail.smtp.starttls.enable", "false");
 props.put("mail.smtp.ssl.trust", server);
 break;
 default:
 resp.getWriter().print("ERROR");
 return;
 

 // create msg
 session = Session.getInstance(props);
 session.setDebug(true);

 MimeMessage message = new MimeMessage(session);
 try 
 try 
 message.setFrom(new InternetAddress(eMail, name));
 message.setSubject(SUBJECT);
 MimeMultipart multipart = new MimeMultipart("related");
 BodyPart bodyPart = new MimeBodyPart();
 bodyPart.setContent(CONTENT, "text/html; charset=utf-8");
 multipart.addBodyPart(bodyPart);
 message.setContent(multipart);
 // send msg
 message.setRecipient(Message.RecipientType.TO, new InternetAddress(mailTo));
 Transport transport = session.getTransport();
 transport.connect(server, username, pass);
 Transport.send(message, username, pass);
 resp.getWriter().print("Mail was send successfully");
 return;
 catch (MessagingException ex) 
 Logger.getLogger(Email.class.getName()).log(Level.SEVERE, null, ex);
 
 catch (UnsupportedEncodingException ex) 
 Logger.getLogger(Email.class.getName()).log(Level.SEVERE, null, ex);
 
 resp.getWriter().print("Sending mail failed");
 

First, fix all these common JavaMail mistakes.

If you can connect to one remote server but not another remote server, your configuration for that server is wrong, or you have a firewall that's preventing connection. The JavaMail FAQ has tips for debugging connection problems.

A quick guess is that the problem in your code is here:

switch (povezava) {
 case "SSL":
 props.put("mail.smtp.socketFactory.port", "port");

You don't insert a port variable here...

If it's not working afterwards you could try to remove the "socketFactory" related properties, I think you don't need them.

Instead you could add:

props.put("mail.smtp.ssl.enable", "true");