I am currently writing a mail client using JSP, and I am able to connect
just fine using POP3, but every time I try to connect using IMAP I get an
"Authenticate Login Failed" message. There shouldn't be a different sign on,
so do you know what the issue could be?
Thank you,

Sis

under general tab have you checked the box: include this account in rec/synch? and made sure your ports are correct?

Have you changed the port number to imap instead of pop3?

No, I didn't. I don't even know where I could do this.

Let me add this: If I connect a JSP with pop3, I enter "localhost" as server. Normally this should also work with IMAP, but clould it be that I have to enter another host? like for instance: /usr/bin/something/imapd

Thank you

Localhost is fine, however in my software I use for IMAP / POP3 checking you still have to define the port number in PHP.

143 is IMAP and 110 is POP3 (well by default)