#!/bin/bash
clear

exim="Exim spammer check."
postfix="Postfix spammer check."
pmta="Pmta spammer check."

### Print textual user interface
echo "Enter a number to start a task:"
echo "==============================="
echo "[0] Exit."
echo
echo "[1] Exim    spammer check."
echo "[2] Postfix spammer check."
echo "[3] Pmta    spammer check."
echo "==============================="


### Read value from user input
read user_input

case "$user_input" in
        0)
          	clear
                echo "==============================="
                echo Exiting...
                echo "==============================="
                ;;
        1)
          	clear
                echo "==============================="
                echo Running task [$user_input] $exim
                echo "==============================="                
                ### Check Exim status. 0 = running; 1 = stopped;
                exim_status=`service exim status &> /tmp/spam-check.tmp; grep "dead\|stopped\|failed\unrecognized" /tmp/spam-check.tmp | wc -l`
                echo -e "Checking Exim status...\n"
                if [ "$exim_status" != 0 ]
                then
                        echo "Exim appears to be offline."
                        echo "Will try to check mail queue anyway..."
                else
                        echo "Exim appears to be running."
                fi
                echo "==============================="                
                ### Exim summary
                echo -e "Exim mail queue: $(exim -bpc)\n"
                echo -e "Exim top 10 senders:\n$(exim -bpr | grep '<' | sed '/<>/d' | cut -d'<' -f2 | cut -d'>' -f1 | sort -n | uniq -c | sort -n | tail)\n"
                ### Large Exim summary table. May not be useful if there are a lot of senders. [Uncomment to enable]
                # Count  Volume  Oldest  Newest  Domain
                # -----  ------  ------  ------  ------
                # echo -e "Exim summary:\n$(exim -bp | exiqsumm)\n"
                # exiqgrep -i -list only mail ids
                echo "==============================="
                ;;
        2)
          	clear
                echo "==============================="
                echo Running task: [$user_input] $postfix
                echo "==============================="                
                ### Check Postfix status. 0 = running; 1 = stopped;
                postfix_status=`service postfix status &> /tmp/spam-check.tmp; grep "dead\|stopped\|failed\|unrecognized" /tmp/spam-check.tmp | wc -l`
                echo -e "Checking Postfix status...\n"
                if [ "$postfix_status" != 0 ]
                then
                        echo "Postfix appears to be offline."
                        echo "Will try to check mail queue anyway..."
                else
                        echo "Postfix appears to be running."
                fi
                echo "==============================="                
                ### Postfix summary
                echo -e "Postfix mail queue: $(mailq | grep ^[A-F0-9] | wc -l)\n"
                echo -e "Postfix top 10 senders:\n$(mailq | grep ^[A-F0-9] | cut -c 42-80 | sort | uniq -c | sort -n | tail)\n" 
                echo "==============================="
                ;;
        3)
          	clear
                echo "==============================="
                echo Running task: [$user_input] $pmta
                echo "==============================="
                ### Check Pmta status. 0 = running; 1 = stopped;                
                pmta_status=`service pmta status &> /tmp/spam-check.tmp; grep "dead\|stopped\|failed\|unrecognized" /tmp/spam-check.tmp | wc -l`
                echo -e "Checking Pmta status...\n"
                if [ "$pmta_status" != 0 ]
                then
                        echo "Pmta appears to be offline."
                        echo "Will try to check mail queue anyway..."
                else
                        echo "Pmta appears to be running."
                fi
                echo "==============================="
                ### Pmta summary
                # testing
                ### Show mail queue
                # pmta show queue
                # pmta show topqueues
                
                ###  Show domains to which mails are being sent
                # pmta show domains
                # pmta show topdomains
                
                ### Show jobs
                pmta show jobs
                echo ""
                echo ""
                
                ### Show status of Traffic, Connections and Queues
                pmta show status
                echo "==============================="
                ;;
        *)
          	clear
                echo "==============================="
                echo "# Error: The input must be a number between 0 and 9. "
                echo "==============================="
                ;;
esac       
        if [ ! -f "/tmp/spam-check.tmp" ]
        then
                echo "Cleaning up temporary files: Nothing to do."
                echo "==============================="
        else
                echo "Cleaning up temporary files: /tmp/spam-check.tmp"
                echo $(rm /tmp/spam-check.tmp -f)
                echo "Done."
                echo "==============================="
        fi