Cannot detect invalid address in Java Mail

Hello,
I have tried the example msgsendsample.java (and other similar examples) that comes with JavaMail . If the recipient address does not exist, Transport.send would not throw an exception. How I can detect an invalid (i.e. non existing address)?
Many thanks,
Arsalan Madjd

You send mail and if it comes back rejected then the address doesn't exist.
What are you trying to accomplish?

I am trying to send email within a Java application and would like to detect if the address I am sending to is invalid. Currently if the address in invalid, the "send" call goes through without any exception and the program terminates. Should I be waiting for the rejected email?
Thanks,
Arsalan

Originally posted by Arsalan Madjd:
Should I be waiting for the rejected email?

You could wait but it might not be back for a few days. The question is, why do you want to know if it is invalid? Is it critical to your application?

yes. It is a part of our requirements to detect the bounced emails. In my test program when send email to an invalid email address, I get an email notification from our mailer daemon within few minutes.

Originally posted by Arsalan Madjd:
yes. It is a part of our requirements to detect the bounced emails. In my test program when send email to an invalid email address, I get an email notification from our mailer daemon within few minutes.

Not every bounced e-mail will return that quickly. Some may take awhile because the e-mail address you are sending to is temporarily down.

Originally posted by Arsalan Madjd:
yes. It is a part of our requirements to detect the bounced emails.

The question is why is that a requirement? Would it be feasible for example to send a test e-mail that the user must repsond to? Then you could send a url pointing to a servlet which would then verify that the user received the e-mail.