Logging Failed POP attempts

[Doug Lumpkin]

I have found answeres to questions about how to log POP attempts in the archives
but all are only for successful retrievals... How do I log failed attempts?

Using Qmail 1.03
checkpassword

    echo -n " qmail-pop3d"
    tcpserver -v -R 0 pop3 /var/qmail/bin/qmail-popup mark.bauercom.net \
        /bin/checkpassword /usr/bin/poplog /var/qmail/bin/qmail-pop3d Maildir 2>&1
| \
        /var/qmail/bin/splogger pop3d &

/usr/bin/popper

#!/bin/sh
echo "$TCPREMOTEIP" "$USER" | /var/qmail/bin/splogger pop3d 3
pop="$1"; shift; exec "$pop" "$@"