#!/bin/bash
#
# Script to parse postfix logs for issues to report
# Created: 2009-12-30
# Changed: 2009-12-31 Added more detail: relaying, RBLs

LOGFILE=${logfile:-/var/log/maillog}
echo "Checking for relaying"
relay=`egrep "postfix\/smtpd?\[[0-9]*\]: [NOQUA-F]+:"  ${LOGFILE} | egrep -v "due to listing in|Sender address rejected|Client host rejected|Recipient address rejected" | sed '/Relay access denied/s/^\(.*\) postfix\/smtpd.*from=\([^ ]*\) to=\([^ ]*\) proto=.*/From: \2 To: \3 On: \1/' | sed -e 's/ To:/\nTo:/g' -e 's/ On:/\nOn:/g'`

echo "Relaying denied from:"
echo "$relay" | grep "^From: " | sed 's/^From: //g' | sort | uniq -c | sort -rn
echo "Relaying denied to:"
echo "$relay" | grep "^To: " | sed 's/^To: //g' | sort | uniq -c | sort -rn

rbl=`egrep "postfix\/smtpd?\[[0-9]*\]: [NOQUA-F]+:"  ${LOGFILE}\
   | egrep -v "Relay access denied|Sender address rejected|Client host rejected|Recipient address rejected" \
   | sed '/due to listing in/s/.*due to listing in \([^:]*\):.*from=\([^ ]*\).* to=\([^ ]*\).*/From: \2 To: \3 RBL: \1/g' \
   | sed -e 's/ To:/\nTo:/g' -e 's/ RBL:/\nRBL:/g'`

echo -n "Total RBL blocks: "
echo "$rbl" | grep "^To: " | wc -l
echo "RBL blocked email to:"
echo "$rbl" | grep "^To: " | sed 's/^To: //g' | sort | uniq -c | sort -rn
echo "RBLs:"
echo "$rbl" | grep "^RBL: " | sed 's/^RBL: //g' | sort | uniq -c | sort -rn

echo "Checking for new postfix errors"
egrep "postfix\/smtpd?\[[0-9]*\]: NOQUEUE:" ${LOGFILE} | egrep -v "Relay access denied|due to listing in|Sender address rejected|Client host rejected|Recipient address rejected" || echo "      none."

echo "Statistics"
egrep 'postfix\/smtpd' ${LOGFILE} | egrep -v 'NOQUEUE:|connect from|client=' | sed -e 's/.*smtpd\[[0-9]*\]: //' -e 's/lost connection.*/lost connection/' -e 's/warning.*/warning/' -e 's/timeout.*/timeout/' -e 's/too many errors.*/too many errors/' -e 's/.*reject.*/other reject/' | sort | uniq -c | sort -rg

pflogsumm /var/log/mail.log