We're running a server in our sports club, which requests (among other functionalities) our emails from t-online. Since a few weeks, the connection is refused most times.
I search around the questions and information on the telekom-page, but have not found any mistakes.
I made sure, the port and the address are correct: https://www.telekom.de/hilfe/festnetz-internet-tv/e-mail/e-mail-server-e-mail-protokolle-und-e-mail-einrichtung/posteingangsserver-und-postausgangsserver?samChecked=true
import java.util.Arrays;
import java.util.Properties;
import java.util.function.Consumer;
import javax.mail.Authenticator;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.search.SearchTerm;
public class EmailTestMain {
public static void main(String[] args) {
String username = "Email#t-online.de";
String password = "Password";
read(username, password, message -> {
try {
System.out.println(message.getSubject());
} catch (MessagingException e) {
e.printStackTrace();
}
}, Folder.READ_WRITE, null);
}
public static void read(final String username, final String password, Consumer<Message> messageConsumer,
int folderAction, SearchTerm searchTerm) {
final String host = "secureimap.t-online.de";
Properties props = new Properties();
props.setProperty("mail.imap.host", host);
props.setProperty("mail.imap.user", username);
props.setProperty("mail.imap.ssl.enable", "true");
props.setProperty("mail.imap.ssl.tr ust", host); // JAVA truststore
props.setProperty("mail.imap.socketFactory", "993");
props.setProperty("mail.imap.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.setProperty("mail.imap.socketFactory.fallback", "false");
props.setProperty("mail.imap.port", "993");
// Start SSL connection
Session session = Session.getDefaultInstance(props, new Authenticator() {
#Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
try (Store store = session.getStore("imap")) {
store.connect(host, username, password);
try (Folder emailFolder = store.getFolder("INBOX")) {
emailFolder.open(folderAction);
if (searchTerm != null) {
Arrays.stream(emailFolder.search(searchTerm)).forEach(messageConsumer::accept);
} else {
Arrays.stream(emailFolder.getMessages()).forEach(messageConsumer::accept);
}
}
} catch (NoSuchProviderException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}
The could should print out all subjects of the emails of the INBOX, but instead throw's an exception:
com.sun.mail.util.MailConnectException: Couldn't connect to host, port: secureimap.t-online.de, 993; timeout -1;
nested exception is:
java.net.ConnectException: Connection refused: connect
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:740)
at javax.mail.Service.connect(Service.java:366)
at javax.mail.Service.connect(Service.java:246)
at de.bamberg.jugger.mail.EmailTestMain.read(EmailTestMain.java:55)
at de.bamberg.jugger.mail.EmailTestMain.main(EmailTestMain.java:21)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:353)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:218)
at com.sun.mail.iap.Protocol.<init>(Protocol.java:134)
at com.sun.mail.imap.protocol.IMAPProtocol.<init>(IMAPProtocol.java:131)
at com.sun.mail.imap.IMAPStore.newIMAPProtocol(IMAPStore.java:763)
at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:698)
... 4 more
Related
Hi I am trying to send a test email using some java code that i have written. Unfortunately, when i run my program i get this error:
javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465, response: -1
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1922)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:638)
at javax.mail.Service.connect(Service.java:317)
at javax.mail.Service.connect(Service.java:176)
at javax.mail.Service.connect(Service.java:125)
at javax.mail.Transport.send0(Transport.java:194)
at javax.mail.Transport.send(Transport.java:124)
at com.brookfieldres.operations.Email.main(Email.java:61)
This is my code below. Please note that i have another properties file where all my Resources are stored. I need to figure out why i keep getting this error. What am i doing wrong?
package com.brookfieldres.operations;
import javax.mail.Session;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import java.util.*;
import java.util.Properties;
import java.util.ResourceBundle;
import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.Transport; //responsible for sending the actual email.
import javax.mail.internet.MimeMessage;
import org.apache.log4j.Logger;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
public class Email {
public Message message;
public String sendTo;
public String sentFrom;
public static void main (String[] Args) {
final Logger aLogger = Logger.getLogger(NewLocation.class.getName());
ResourceBundle resource = ResourceBundle.getBundle("Resources");
String sendTo = resource.getString("RECIEVING_USER_EMAIL");
String sentFrom = resource.getString("SENDING_USER_EMAIL");
final String userName = resource.getString("SMTP_USER");
final String password = resource.getString("SMTP_PASSWORD");
final String host = resource.getString("SMTP_SERVER");
Properties prop = new Properties();
prop.put("mail.smtp.host", host);
prop.put("mail.smtp.port", "465");
prop.put("mail.smtp.auth", "True");
Session session = Session.getDefaultInstance(prop, new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(userName, password);
}
});
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(sentFrom));
message.setRecipient(Message.RecipientType.TO, new InternetAddress(sendTo));
message.setSubject("Test");
message.setText("Test");
Transport.send(message);
System.out.println("Sent Message Successfully.");
} catch (AddressException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}//main
}
I'm developing FTP program on JAVA. I'm using Apache Commons Net Library. My Codes are below.
import java.io.IOException;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;
public class ServerClass {
private static void showServerReply(FTPClient ftpClient) {
String[] replies = ftpClient.getReplyStrings();
if (replies != null && replies.length > 0) {
for (String aReply : replies) {
System.out.println("SERVER: " + aReply);
}
}
}
public static void main(String[] args) {
String server = "127.0.0.1";
int port = 80;
String user = "root";
String pass = "root";
FTPClient ftpClient = new FTPClient();
try {
ftpClient.connect(server, port);
showServerReply(ftpClient);
int replyCode = ftpClient.getReplyCode();
if (!FTPReply.isPositiveCompletion(replyCode)) {
System.out.println("Operation failed. Server reply code: " + replyCode);
return;
}
boolean success = ftpClient.login(user, pass);
showServerReply(ftpClient);
if (!success) {
System.out.println("Could not login to the server");
return;
} else {
System.out.println("LOGGED IN SERVER");
}
} catch (IOException ex) {
System.out.println("Oops! Something wrong happened");
ex.printStackTrace();
}
}
}
But I can't connect my localhost. I want to login my localhost and see my file.
My errors are below.
Oops! Something wrong happened
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at org.apache.commons.net.SocketClient.connect(SocketClient.java:188)
at org.apache.commons.net.SocketClient.connect(SocketClient.java:209)
at com.emrecanoztas.ftp.ServerClass.main(ServerClass.java:22)
can you help me anybody? Thanks!..
Questions:
Is there an FTP server running?
Is there a message in the FTP server log about the connect request?
Does the FTP server allow connections from localhost?
Is the FTP server listening on localhost or should you use the public IP/name of the computer? (check with netstat)
Try the settings below.
String server = "ftp.icm.edu.pl";
int port = 21;
String user = "anonymous";
String pass = "me#nowhere.com";
I am using a Java SFTP library Called JSch , and here is my code :
package client;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;
import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
public class SFTPCode_2 {
public SFTPCode_2() {
super();
}
public static void main (String[] args) {
SFTPCode_2 fileTransfer = new SFTPCode_2();
try {
JSch jsch = new JSch();
String host = "127.0.0.1";
int port = 22;
String user = "username";
Session sessionRead = jsch.getSession(user, host, port);
sessionRead.connect();
Session sessionWrite = jsch.getSession(user, host, port);
sessionWrite.connect();
ChannelSftp channelRead = (ChannelSftp)sessionRead.openChannel("sftp");
channelRead.connect();
ChannelSftp channelWrite = (ChannelSftp)sessionWrite.openChannel("sftp");
channelWrite.connect();
PipedInputStream pin = new PipedInputStream(2048);
PipedOutputStream pout = new PipedOutputStream(pin);
/* channelRead.rename("C:/Users/IBM_ADMIN/Desktop/Work/ConnectOne_Bancorp/Java_Work/SFTP_1/house.bmp",
"C:/Users/IBM_ADMIN/Desktop/Work/ConnectOne_Bancorp/Java_Work/SFTP_2/house.bmp"); */
channelRead.get("C:/Users/IBM_ADMIN/Desktop/Work/ConnectOne_Bancorp/Java_Work/SFTP_1/house.bmp", pout);
channelWrite.put(pin , "C:/Users/IBM_ADMIN/Desktop/Work/ConnectOne_Bancorp/Java_Work/SFTP_2/house.bmp");
channelRead.disconnect();
channelWrite.disconnect();
sessionRead.disconnect();
sessionWrite.disconnect();
} catch( JSchException e) {
e.printStackTrace(); }
catch (SftpException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
I am trying to copy a file from one directory (within my local machine) to another, using the JSch library .
But it give me this error :
com.jcraft.jsch.JSchException: java.net.ConnectException: Connection refused: connect
at com.jcraft.jsch.Util.createSocket(Util.java:349)
at com.jcraft.jsch.Session.connect(Session.java:215)
at com.jcraft.jsch.Session.connect(Session.java:183)
at client.SFTPCode_2.main(SFTPCode_2.java:43)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at java.net.Socket.<init>(Socket.java:425)
at java.net.Socket.<init>(Socket.java:208)
at com.jcraft.jsch.Util.createSocket(Util.java:343)
... 3 more
Process exited with exit code 0.
I tried adding Cygwin ( from link here ) but it still didn't work.
It's not clear what line is throwing the exception. Try to surround each Jsch action with try/catch, like so:
Session sessionRead = null;
try {
sessionRead = jsch.getSession(user, host, port);
} catch (JSchException e) {
System.out.println("Issue getting session.");
e.printStackTrace();
}
try {
sessionRead.connect(); // do you need to set properties first?
} catch (JSchException e) {
System.out.println("Issue connecting to session.");
e.printStackTrace();
}
For me, when I use Jsch, I had to add session properties to make the connection eg, on sessionRead.connect() .
sessionRead.setPassword("password");
sessionRead.setConfig("StrictHostKeyChecking", "no");
sessionRead.connect();
i am using java mail for sending the mail , i am stuck in this error: javax.mail.MessagingException: Could not connect to SMTP host: 103.12.134.112, port: 25;
i have see the related question , bt its not work for me , using window 8. help me , thankx in advance.
package com.airportbookingvn;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.util.ByteArrayDataSource;
import com.lowagie.text.Chunk;
import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfWriter;
/**
* Email with PDF example.
* <br><br>
* Email sending code adapted from http://www.java-tips.org/other-api-tips/javamail/how-to-send-an-email-with-a-file-attachment.html.
* #author Jee Vang
*
*/
public class SendAttachment {
/**
* Sends an email with a PDF attachment.
*/
public void email() {
String smtpHost = "103.12.134.112"; //replace this with a valid host
int smtpPort = 25; //replace this with a valid port
String sender = "sender#yourhost.com"; //replace this with a valid sender email address
String recipient = "recipient#anotherhost.com"; //replace this with a valid recipient email address
String content = "dummy content"; //this will be the text of the email
String subject = "dummy subject"; //this will be the subject of the email
Properties properties = new Properties();
properties.put("mail.smtp.host", smtpHost);
properties.put("mail.smtp.port", smtpPort);
Session session = Session.getDefaultInstance(properties, null);
ByteArrayOutputStream outputStream = null;
try {
//construct the text body part
MimeBodyPart textBodyPart = new MimeBodyPart();
textBodyPart.setText(content);
//now write the PDF content to the output stream
outputStream = new ByteArrayOutputStream();
writePdf(outputStream);
byte[] bytes = outputStream.toByteArray();
//construct the pdf body part
DataSource dataSource = new ByteArrayDataSource(bytes, "application/pdf");
MimeBodyPart pdfBodyPart = new MimeBodyPart();
pdfBodyPart.setDataHandler(new DataHandler(dataSource));
pdfBodyPart.setFileName("test.pdf");
//construct the mime multi part
MimeMultipart mimeMultipart = new MimeMultipart();
mimeMultipart.addBodyPart(textBodyPart);
mimeMultipart.addBodyPart(pdfBodyPart);
//create the sender/recipient addresses
InternetAddress iaSender = new InternetAddress(sender);
InternetAddress iaRecipient = new InternetAddress(recipient);
//construct the mime message
MimeMessage mimeMessage = new MimeMessage(session);
mimeMessage.setSender(iaSender);
mimeMessage.setSubject(subject);
mimeMessage.setRecipient(Message.RecipientType.TO, iaRecipient);
mimeMessage.setContent(mimeMultipart);
//send off the email
Transport.send(mimeMessage);
System.out.println("sent from " + sender +
", to " + recipient +
"; server = " + smtpHost + ", port = " + smtpPort);
} catch(Exception ex) {
ex.printStackTrace();
} finally {
//clean off
if(null != outputStream) {
try { outputStream.close(); outputStream = null; }
catch(Exception ex) { }
}
}
}
/**
* Writes the content of a PDF file (using iText API)
* to the {#link OutputStream}.
* #param outputStream {#link OutputStream}.
* #throws Exception
*/
public void writePdf(OutputStream outputStream) throws Exception {
Document document = new Document();
PdfWriter.getInstance(document, outputStream);
document.open();
document.addTitle("Test PDF");
document.addSubject("Testing email PDF");
document.addKeywords("iText, email");
document.addAuthor("Jee Vang");
document.addCreator("Jee Vang");
Paragraph paragraph = new Paragraph();
paragraph.add(new Chunk("hello!"));
document.add(paragraph);
document.close();
}
/**
* Main method.
* #param args No args required.
*/
public static void main(String[] args) {
SendAttachment demo = new SendAttachment();
demo.email();
}
}
ERROR :
javax.mail.MessagingException: Could not connect to SMTP host: 103.12.134.112, port: 25;
nested exception is:
java.net.ConnectException: Connection timed out: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1706)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:525)
at javax.mail.Service.connect(Service.java:291)
at javax.mail.Service.connect(Service.java:172)
at javax.mail.Service.connect(Service.java:121)
at javax.mail.Transport.send0(Transport.java:190)
at javax.mail.Transport.send(Transport.java:120)
at com.airportbookingvn.SendAttachment.email(SendAttachment.java:89)
at com.airportbookingvn.SendAttachment.main(SendAttachment.java:136)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:284)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:227)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1672)
... 8 more
There is no smtp server listening at 103.12.134.112 port 25 at the moment (I just checked)
You can check using telnet. See answer https://stackoverflow.com/a/11988455/3536342 by balanv for more information.
I am using Java Eclipse on Windows, and have Mysql set up on Solaris 10. I have used JSch but it is not letting me to connect to Mysql database with root user.
I am getting the below error:
Connected
localhost:3306 -> xxx.xx.xxx.xxx:3306
Port Forwarded
java.sql.SQLException: Access denied for user: 'root#192.168.1.1' (Using password: YES)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1056)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3376)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3308)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:894)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1309)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2032)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:729)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:283)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at ir.mnaeimabadi.hello.mysqltest.main(mysqltest.java:47)
Actually when in this line:
DriverManager.getConnection (url, dbuserName, dbpassword);
It is giving me the error.
This is overall code:
package ir.mnaeimabadi.hello;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import java.sql.Connection;
public class mysqltest {
public static void main(String[] args) {
// TODO Auto-generated method stub
int lport=3306;
String rhost="xxx.xx.xxx.xxx";
String host="xxx.xx.xxx.xxx";
int rport=3306;
String user="myusr";//ssh user
String password="mypass";//ssh pass
String dbuserName = "root";//mysql user
String dbpassword = "rootPass"; //mysql pass
String url = "jdbc:mysql://xxx.xx.xxx.xxx:";
String driverName="com.mysql.jdbc.Driver";
Connection conn = null;
Session session= null;
try{
//Set StrictHostKeyChecking property to no to avoid UnknownHostKey issue
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
session=jsch.getSession(user, host, 22);
session.setPassword(password);
session.setConfig(config);
session.connect();
System.out.println("Connected");
int assinged_port=session.setPortForwardingL(lport, rhost, rport);
System.out.println("localhost:"+assinged_port+" -> "+rhost+":"+rport);
System.out.println("Port Forwarded");
url = url+assinged_port+"/myDB";
//mysql database connectivity
Class.forName(driverName).newInstance();
conn = DriverManager.getConnection (url, dbuserName, dbpassword);
System.out.println ("Database connection established");
System.out.println("DONE");
}catch(Exception e){
e.printStackTrace();
}finally{
try {
if(conn != null && !conn.isClosed()){
System.out.println("Closing Database Connection");
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(session !=null && session.isConnected()){
System.out.println("Closing SSH Connection");
session.disconnect();
}
}
}
}