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[英]I get java.net.SocketException: Permission denied: connect when sending an email in Jenkins
[英]How to solve: Sending the email to the following server failed SocketException: Permission denied: connect
使用Java以编程方式发送邮件时遇到问题。 我从网络团队确认,使用防火墙阻止了通过Java发送邮件 。 但能够在Windows命令提示符下从telnet获得响应 。 请在下面找到详细信息。
使用Javax Mail发送邮件的代码:
public static void main(String[] args) throws MessagingException {
String host = "mailhost.xxx";
String to = "abc@xyz.edu";
String from = "cde@xyz.edu";
String subject = "test";
String messageText = "body test";
Properties props = System.getProperties();
props.put("mail.host", host);
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.port", "25");
// If using authentication, otherwise comment out
props.put("mail.smtp.auth", "true");
// Gmail requires TLS, your server may not
props.put("mail.smtp.starttls.enable", "true");
// Session mailSession = Session.getDefaultInstance(props, null);
Session mailSession = Session.getInstance(props, new javax.mail.Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("username", "password");
}
});
Message msg = new MimeMessage(mailSession);
msg.setFrom(new InternetAddress(from));
InternetAddress[] address = { new InternetAddress(to) };
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject(subject);
msg.setSentDate(new Date());
msg.setText(messageText);
Transport transport = mailSession.getTransport("smtp");
// connect with authentication
// transport.connect(host,"myUsername" , "myPassword");
// connect without authentication
transport.connect();
transport.sendMessage(msg, address);
transport.close();
System.out.println("Mail was sent to " + to);
System.out.println(" from " + from);
System.out.println(" using host " + host + ".");
}
使用Telnet能够在命令提示符下发送邮件: telnet mailhost.xxx 25 am收到如下响应:
220 mailhost Microsoft ESMTP MAIL Service ready at Tue, 29 Mar 201
6 23:34:36 -0700
谷歌搜索后,我还尝试如下在Eclipse中设置JVM参数,仍然没有运气,如下所示
-Djava.net.preferIPv4Stack=true
例外:
Exception in thread "main" org.apache.commons.mail.EmailException: Sending the email to the following server failed : mailhost.xxx:25
at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1242)
at org.apache.commons.mail.Email.send(Email.java:1267)
at edu.xxx.pageobject.appcenter.util.ReportGenerator.main(ReportGenerator.java:328)
Caused by: javax.mail.MessagingException: Could not connect to SMTP host: mailhost xxx, port: 25;
nested exception is:
java.net.SocketException: Permission denied: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1282)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:370)
at javax.mail.Service.connect(Service.java:297)
at javax.mail.Service.connect(Service.java:156)
at javax.mail.Service.connect(Service.java:105)
at javax.mail.Transport.send0(Transport.java:168)
at javax.mail.Transport.send(Transport.java:98)
at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1232)
... 2 more
Caused by: java.net.SocketException: Permission denied: connect
at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)
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 com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:232)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1250)
... 9 more
让我知道解决上述问题的所有可能解决方案。
由于:
那不是网络防火墙的问题。
您还排除了相关的Java 7错误 。 因此,问题可能出在您本地的Windows防火墙或您使用的任何防病毒/防火墙上。 它可能会授予telnet权限,但不会授予Java权限。
尝试禁用所有本地防火墙/防病毒软件,然后检查java是否可以成功连接。 如果是这样,请重新启用防火墙,并创建一个例外规则以允许Java应用程序连接到端口25。
针对上述问题发布替代解决方案:当我们使用Exchange帐户时,我们能够使用EWS(Exchange Web服务)API以编程方式发送邮件。 EWS入门指南链接
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