java.lang.NoClassDefFoundError: javax/mail/Message

[Smarty]

While executing my class, I get the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: javax/mail/Message

I thought that this would mean that the class was not in my classpath, but I compiled with:

javac User.java -classpath c:\classpath

and the file c:\classpath\javax\mail\Message.class exists.

Any1 knows why this program won't run?

Greetz,
(not so) Smarty

 

[Smarty]

The problem is solved. It was indeed a classpath issue...