Am using Maildir
I did a standard install on Ubuntu 5.10 Breezy, and followed the instructions to a tee. Other than a corrupt SSL cert on the original install, everything has worked pretty well.
Not sure but I think its dovecot for the POP3 server. Whatever was recommended in install guide. I have about 5 test boxes but only two test accounts on the domain I testing now. One works, the other doesn't.
For grins, I install second site under the same reseller and added two users. Both work fine.
I deleted the account and created a new one under the site that Ihad issues with and the new one won't work either giving the identical error. But the second original account still works. Go figure? Any ideas?