yum -y install postfix-pflogsumm

vi pflogsumm_report
#!/bin/bash

MAILLOG=`mktemp`
for log in `ls /var/log/maillog*|sort -r`
do
    cat $log >> $MAILLOG
done
REPORT=`mktemp`
pflogsumm --problems_first --verbose_msg_detail --mailq -d yesterday $MAILLOG > $REPORT
cat $REPORT | mail -s "`head -1 $REPORT` in `uname -n`" postmaster
rm -f $MAILLOG $REPORT

chmod 700 pflogsumm_report
./pflogsumm_report

mv pflogsumm_report /etc/cron.daily/