Email seems to not be recieving..and the webmail installed (UBI) wont log into any mailbox's. I send test messages from hotmail and never get a undeliverable message in hotmail..so where are they? I use multiple mail clients on other machines to check and they (like outlook) cannot login to the mail box(s) either.
From your Postfix logs it seems as if you're using Maildir. Are you using Courier-POP3or another POP3 daemon? You have to use on that's using Maildir, not mbox (if you search the forums, you'll find more about this).