> Courier-imap (as of today, latest version) is the pop server. I am using
> Ximian Evolution as my client.
You need to use vipmap -a to add a map for vpopmail. It used to be
reverse dns based, but a while back switched to an internal map.
Also, couriertcpd sets the IP in IPv6 format, so you'll need a patch to
vpopmail.c's host_in_locals that I posted to this list last week that
converts it back to IPv4. Or, you could try disabling IPv6 in
courier-imap, but I don't know for sure that that will work.