Find Spammer on exim server - cPanel

Top 5 users sending maximum emails

grep "<=.*P=local" /var/log/exim_mainlog | awk '{print $6}' | sort | uniq -c | sort -nr | head -5
eximstats /var/log/exim_mainlog | grep -A7 "Top 50 local senders by message count" | tail -5 | awk '{print $1,$NF}'

Top 5 mail receivers:

egrep "(=>.T=virtual_userdelivery|=>.T=local_delivery)" /var/log/exim_mainlog | awk '{print $7}' | sort | uniq -c | sort -nr | head -5
eximstats /var/log/exim_mainlog | grep -A7 "Top 50 local destinations by message count" | tail -5 | awk '{print $1,$NF}'

Script to check path for the script used for spamming

awk '{ if ($0 ~ "cwd" && $0 ~ "home") {print $3} }' /var/log/exim_mainlog | sort | uniq -c | sort -nk 1
awk '{ if ($0 ~ "cwd" && $0 ~ "home") {print $4} }' /var/log/exim_mainlog | sort | uniq -c | sort -nk 1

If there is large number of hits from an IP,block the IP

tail -n1000 /var/log/exim_mainlog |grep SMTP|cut -d[ -f2|cut -d] -f1|sort -n |uniq -c

Following command will show you the maximum no of email currently in the mail queue have from or to the email address in the mail queue with exact figure.

exim -bpr | grep "<@>" | awk '{print $4}'|grep -v "<>" | sort | uniq -c | sort -n

That will show you the maximum no of email currently in the mail queue have for the domain or from the domain with number.

exim -bpr | grep "<@>" | awk '{print $4}'|grep -v "<>" |awk -F "@" '{ print $2}' | sort | uniq -c | sort -n

Following command will show path to the script being utilized to send mail

ps -C exim -fH eww
ps -C exim -fH eww | grep home
cd /var/spool/exim/input/
egrep "X-PHP-Script" * -R

Command to delete frozen mails

exim -bp | awk '$6~"frozen" {print $3 }' | xargs exim -Mrm

If anyone is spamming from /tmp

tail -f /var/log/exim_mainlog | grep /tmp

To display the IP and no of tries done the IP to send mail but rejected by the server.

tail -3000 /var/log/exim_mainlog |grep 'rejected RCPT' |awk '{print$4}'|awk -F[ '{print $2} '|awk -F] '{print $1} '|sort | uniq -c | sort -k 1 -nr | head -n 5

Shows the  connections from a certain ip to the   SMTP server

netstat -plan|grep :25|awk {‘print $5?}|cut -d: -f 1|sort|uniq -c|sort -nk 1

To shows the domain name and the no of emails in queue

exim -bp | exiqsumm | more

If  spamming from outside domain then you can block that domain or email id on the server

pico /etc/antivirus.exim

Add the following lines:

if $header_from: contains “name@domain.com” then seen finish endif

Catching spammer

Check mail stats

exim -bp | exiqsumm | more

Check if any php script is causing the mass mailing with

cd /var/spool/exim/inputegrep “X-PHP-Script” * -R

Just cat the ID that you get and you will be able to check which script is here causing problem for you.  To Remove particular email account email

exim -bpr |grep “test.org”|awk {‘print $3?}|xargs exim -Mrm