JavaMail Error

[Avi Abrami]

Greetings,
JSE 1.6.0_26 on Windows 2000
Below is my java code for sending eMail.
Following the code is the exception I am getting.

Properties p = new Properties();
p.put("mail.host", "network_mail_host");
p.put("mail.transport.protocol", "smtp");
p.put("mail.user", "Avi");
p.put("mail.password", "Password");
InternetAddress ia = new InternetAddress("[e-mail]");
Session s = Session.getDefaultInstance(p, null);
MimeMessage m = new MimeMessage(s);
m.setRecipient(javax.mail.Message.RecipientType.TO, ia);
m.setSubject("Hi");
m.setText("Hi");
Transport.send(m);

Exception details:

javax.mail.SendFailedException: Sending failed;
    nested exception is:
        class javax.mail.MessagingException: Could not connect to SMTP host: network_mail_host, port: 25
            at javax.mail.Transport.send0 (Transport:218)
            at javax.mail.Transport.send Transport:80)

I don't know if this is relevant but I can send eMail using javascript. Here is my HTML code that successfully sends eMail.
<form> <input type="BUTTON" value="Send Mail" onclick="parent.location='mailto:[e-mail]?subect=Hi&body=Hi'" /> </form>
Thanks (in advance) for any help.

Cheers,
Avi.

[Ulf Dittmer]

It seems that "network_mail_host" is not the name of a server that has an SMTP process running on port 25. (And no, the "mailto:" capability has nothing to do with this.)

[Avi Abrami]

Ulf,
I don't want to publish here the real name of the server that I am trying.
The name that I am using I obtained from the Microsoft Outlook configuration.
There is a field in the configuration GUI that is labelled: Microsoft Exchange Server
I guess what I need is to find the correct values for the properties I am using in my java code like "mail.host".
Perhaps you can tell me how I can discover these values?

Thanks,
Avi.

[Ulf Dittmer]

I see. Not mentioning that you changed the name of the server made it a red herring; please avoid that in the future.

Exchange does not by default run an SMTP server; does this one? On port 25?

[Avi Abrami]

Ulf,
I don't know if Exchange is running here as an SMTP server and I also don't know what port it is using.
As I asked in my previous post:

Perhaps you can tell me how I can discover these values?

Cheers,
Avi.

[Ulf Dittmer]

What does your Exchange server admin say? Can you telnet into port 25 of the Exchange server?

[Avi Abrami]

Ulf,
I open a DOS prompt window and execute the following command:
telnet network_mail_host 25
Upon execution the screen clears and the following message is displayed:
Connection to host lost.

So are you saying that I can only obtain the required information from the Exchange server admin?

Cheers,
Avi.

[Rob Spoor]

If you can't connect using telnet you won't be able to connect using Java. Contact your system administrator to help you out.