Re: send SMTP email using socket problem: java.net.ConnectException

From: Steve Horsley (shoot_at_the.moon)
Date: 02/21/05 

Date: Mon, 21 Feb 2005 18:18:09 +0000

jrefactors@hotmail.com wrote:
> I want to write the socket program to send SMTP email, without using
> any JavaMail API.
> Here's the program, but it turns out it has the following exceptions: I
> don't know
> which part it went wrong. please advise. thanks!!
>
> /**
> java.net.ConnectException: Connection timed out: connect
> at java.net.PlainSocketImpl.socketConnect(Native Method)
> at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
> at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
> at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
> at java.net.Socket.connect(Socket.java:452)
> at java.net.Socket.connect(Socket.java:402)
> at java.net.Socket.<init>(Socket.java:309)
> at java.net.Socket.<init>(Socket.java:124)
> at SMTPTest.sendMail(SMTPTest.java:20)
> at SMTPTest.main(SMTPTest.java:12)
> */
>
> ======================================================================
> import java.net.*;
> import java.io.*;
> import java.util.*;
>
> /**
> * send SMTP email using socket
> *
> */
> public class SMTPTest
> { public static void main(String[] args)
> { SMTPTest smtp = new SMTPTest();
> smtp.sendMail();
> }
>
> public void sendMail()
> {
> try
> {
> Socket s = new Socket("smtp.gmail.com", 465); //smtp.gmail.com, 465

I don't think gmail allow you to send mail messages through their server using
SMTP at all. They allow POP3 to retrieve messages though.

You can prove by hand that they don't accept SMTP with this command:
    telnet smtp.google.com 465

Steve

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