I am trying to retrieve email from an Exchange 2003 server using pop3 protocol. I can login with the domain user and open the mailbox, even retrieve how many message it contains, but when I try and retrieve the messages from the folder I get java.lang.NoClassDefFoundError: javax/activation/DataSource.
If anyone else have encountered this problem and managed to resolve it please assist.
There are many JavaMail tutorials available; at my job I have bookmarks to articles on Javaworld and jGuru. But keep in mind that the MAPI protocol is not easy to use since it is a Microsoft proprietary protocol. Your Exchange mailbox should support either IMAP or POP3. If it doesn't you should contact your system administrator.