Exchange 2013 / Eudora POP-account not working

I have a MAC (version 9) user who has Eudora (6.2.4). User tries to connect to Exchange 2013 server with POP-account but is unable to get this to work.

I tried to search the web for this answer but couldn't.

I would be happy to know if this is even possible to set up before I spend my time and customer's money on this.

I got Eudora 7.1 working with IMAP on my XP Virtual machine, but I have no way of testing it with MAC-computer.