Easy lightweight pop3 server

I'm writing a POP3 proxy, and would like a simple, quick-to-setup POP3 server to do some local testing.

Is there a lightweight POP3 server, th开发者_如何学Goat I can easily configure with an account and some fake e-mails?

---

VHCS has this capability. I am assuming you are using ubuntu. You can check this thread in ubuntu forums Pop 3 mail server