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  • Route RPKI validation April 1st, 2022
    RPKI is a security framework by which network owners can validate and secure the critical route updates or Border Gateway Protocol (BGP) announcements between public Internet networks. BGP is essentially the central nervous system of the Internet and one of its fundamental building blocks. The main function of BGP is to facilitate efficient routing between Autonomous Systems (AS), by building and maintaining the Internet routing table. The Internet routing table is effectively the navigation system of the Internet and without it, traffic would be unable to flow between its constituent networks. Unfortunately, routing equipment alone cannot distinguish between legitimate and malicious routing announcements,...
  • RIPE – Atlas Anchor February 17th, 2022
    We have become an even more integral part of the RIPE Atlas project by hosting an anchor, a device that allows for latency analysis of traffic between autonomous systems.https://atlas.ripe.net/probes/7073/RIPE Atlas anchors play an integral role in the RIPE Atlas network by acting both as enhanced RIPE Atlas probes with more measurement capacity, as well as regional measurement targets within the greater RIPE Atlas network. Anchors are able to perform many more measurements than a regular RIPE Atlas probe, and the large amount of data they collect is made available to everyone. In addition, anchors act as powerful targets that can...
  • MANRS June 20th, 2020
    GOLINE firmly believes in initiatives to protect networks, improve security and resilience of the global routing system. Therefore we decided to support the MANRS project and join as participants.Mutually Agreed Norms for Routing Security (MANRS) is a global initiative, supported by the Internet Society, that provides crucial fixes to reduce the most common routing threats. MANRS offers specific actions via four programs for Network Operators, Internet Exchange Points, CDN and Cloud Providers, and Equipment Vendors. Requirements for Participation Please read the full MANRS Actions document before applying. You can become a participant if you meet these requirements: You (or your company) support...

Find Spammer on cPanel exim server

Paolo Caparrelli cPanel 22 June 2022

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

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