SMPT Error on different ISP

Question

props.put("mail.smtp.host", "mail.google.com");
props.put("mail.user", "[email protected]");
props.put("mail.password", "mypass");
Session s = Session.getInstance(props,null);
InternetAddress from = new InternetAddress("[email protected]");
InternetAddress to = new InternetAddress("[email protected]");
MimeMessage message = new MimeMessage(s);
message.setFrom(from);
message.addRecipient(Message.RecipientType.TO, to);
message.setSubject("Your subject");
message.setText("Your text");
Transport.send(message);
This would normally work on my home isp which is talk talk but when i am away from home connection and use the mobile connection of vodaphone my mail program comes up saying
javax.mail.NoSuchProviderException: smtp
at javax.mail.Session.getService(Session.java:780)
at javax.mail.Session.getTransport(Session.java:718)
at javax.mail.Session.getTransport(Session.java:661)
at javax.mail.Session.getTransport(Session.java:641)
at javax.mail.Session.getTransport(Session.java:696)
at javax.mail.Transport.send0(Transport.java:186)
at javax.mail.Transport.send(Transport.java:118)
at test.mail.Emailer2.<init>(Emailer2.java:45)
at test.mail.Emailer2.main(Emailer2.java:52)
any idea as why this happens and how to get round it. Is there any know issues?
Thanks in advance

Answer 1

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This forum doesn't deal with java client programming -- rather it is for the Sun messaging server (the other end of the equation) which google/gmail definitely doesn't use.
Your cross-post here is your best bet : http://forum.java.sun.com/thread.jspa?threadID=5282014&messageID=10185364#10185364
Regards,
Shane.