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POTrouble sending via gmail's SMTP server with Java
 

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  1. POTrouble sending via gmail's SMTP server with Java
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    <p>One of my customers is using Gmail for business (part of Google Apps) and I had to reconfigure the website I've developed so it would match the new credentials. After a bit of struggle due to TLS errors, I've managed to make the code work on localhost and on my test server (both Apache Tomcat 5.5). Everything was going smooth until I had to move it on his server (another Tomcat 5.5 as the hosting company told me). On the client's server I get the following error:</p> <pre><code>javax.mail.SendFailedException: Sending failed; nested exception is: class javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465; nested exception is: java.io.IOException: Couldn't connect using "javax.net.ssl.SSLSocketFactory" socket factory to host, port: smtp.gmail.com, 465; Exception: java.lang.reflect.InvocationTargetException </code></pre> <p>The strange thing is that on localhost and the test server the port 465 works fine, and the guys from hosting said that port is opened on their server.</p> <p>The code that connects to the mailserver is:</p> <pre><code>private void initConfigParams() throws CMSGeneralException { try { props = System.getProperties(); String smtpHost = Messages.getDBConfString("mail.smtp.host"); String mailPort = Messages.getDBConfString("mail.smtp.port"); String socketFallback = Messages.getDBConfString("mail.smtp.socketFactory.fallback"); String enableTls = Messages.getDBConfString("mail.smtp.starttls.enable"); String authSmtp = Messages.getDBConfString("mail.smtp.auth"); String tlsRequired = Messages.getDBConfString("mail.smtp.stattls.required"); String sktFactory = Messages.getDBConfString("mail.smtp.socketFactory.class"); props.put("mail.smtp.starttls.enable", enableTls); props.put("mail.smtp.host", smtpHost); props.put("mail.smtp.auth", authSmtp); props.put("mail.smtp.starttls.required", tlsRequired); props.setProperty("mail.smtp.socketFactory.class", sktFactory); props.setProperty("mail.smtp.socketFactory.fallback", socketFallback); props.setProperty("mail.smtp.port", mailPort); props.setProperty("mail.smtp.socketFactory.port", mailPort); props.put("mail.transport.protocol", Messages.getDBConfString("mail.transport.protocol")); Authenticator auth = null; userName = Messages.getDBConfString("mail.username"); userPassword = Messages.getDBConfString("mail.userpassword"); if (!CMSUtils.isEmptyString(userName) &amp;&amp; !CMSUtils.isEmptyString(userPassword)){ /* props.put("mail.smtp.auth", "true"); */ auth = new SMTPAuthenticator(userName, userPassword); } session = Session.getDefaultInstance(props, auth); session.setDebug(false); address = new InternetAddress[1]; address[0] = new InternetAddress(recipients); mbText = new MimeBodyPart(); mbText.setContent(text, "text/html"); mp = new MimeMultipart(); mp.addBodyPart(mbText); } catch (MessagingException e) { e.printStackTrace(); throw new CMSGeneralException(); } } </code></pre> <p>With the following .properties file</p> <pre><code>mail.smtp.starttls.enable=true mail.smtp.host=smtp.gmail.com mail.smtp.auth=true mail.smtp.starttls.required=true mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory mail.smtp.socketFactory.fallback=false mail.smtp.port=465 mail.transport.protocol=smtps mail.username=website@example.com mail.userpassword=password mail.from=website@example.com mail.to=mail@example.com </code></pre> <p>I tried the other ports for GMail, 587, but it doesn't work on any of the servers. Not even port 25 won't do the trick.</p> <p>So, what am I doing wrong, and what should I do to make the mailing work?</p>
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    1. USAndrei Bogdan
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      1. VTUpMod
    1. COCan you find more information in the logs about the `InvocationTargetException`? Hopefully with a stack trace?
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      1. USEli Acherkan
    2. COWhat JVM is being used on the troublesome server?
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      1. USThorbjørn Ravn Andersen
 

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