Back to the SMTP and POP auth problem: modifying the "run" files to run as root (and admin) does not solve it. Any other ideas of what we can try to diagnose the problem?
Since I've upgraded to Kloxo-MR, the log files /var/log/kloxo/smtp.log no longer has any useful log messages posted to it, only the time-stamp messages. /var/log/kloxo/maillog also doesn't show anything like the informational messages that it used to. Now there is just the "vchkpw-smtp: vpopmail user not found" and "vchkpw-pop3: vpopmail user not found" messages.
How can I turn on a bit more logging?