Courier Authentication Library A new SQLite authentication module has been added to the Courier Authentication Library. It's considered to be in experimental or testing status. Debugging To generate additional debugging messages, edit the authdaemond startup script (installed in /usr/local/bin by default), and add the following to the script: DEBUG_LOGIN=2 export DEBUG_LOGIN Debugging messages from the authentication daemon processes will be sent to the syslog facility, and recorded in whatever log file syslog is configured to use (usually /var/log/messages or /var/log/maillog).