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31 January, 2013

How to track spammer in whm?

tep 1)

Login to your server and su - to root.

Step 2)

Turn off exim while we do this so it doesn't freak out.
/etc/init.d/exim stop

Step 3)

Backup your original /usr/sbin/sendmail file. On systems using Exim MTA, the sendmail file is just basically a pointer to Exim itself.
mv /usr/sbin/sendmail /usr/sbin/sendmail.hidden

Step 4)

Create the spam monitoring script for the new sendmail.
pico /usr/sbin/sendmail

Paste in the following:

Code:
#!/usr/local/bin/perl
# use strict;
use Env;
my $date = `date`;
chomp $date;
open (INFO, ">>/var/log/spam_log") || die "Failed to open file ::$!";
my $uid = $>;
my @info = getpwuid($uid);
if($REMOTE_ADDR) {
print INFO "$date - $REMOTE_ADDR ran $SCRIPT_NAME at $SERVER_NAME n";
}
else {
print INFO "$date - $PWD - @infon";
}
my $mailprog = '/usr/sbin/sendmail.hidden';
foreach (@ARGV) {
$arg="$arg" . " $_";
}
open (MAIL,"|$mailprog $arg") || die "cannot open $mailprog: $!n";
while (<STDIN> ) {
print MAIL;
}
close (INFO);
close (MAIL);
Step 5)

Change the new sendmail permissions
chmod +x /usr/sbin/sendmail

Step 6)


Create a new log file to keep a history of all mail going out of the server using web scripts
touch /var/log/spam_log

chmod 0777 /var/log/spam_log

Step 7)

Start Exim up again.
/etc/init.d/exim start

Step 8)

Monitor your spam_log file for spam, try using any formmail or script that uses a mail function - a message board, a contact script.
tail - f /var/log/spam_log

Sample Log Output

Mon Apr 11 07:12:21 EDT 2005 - /home/username/public_html/directory/subdirectory - nobody x 99 99 Nobody / /sbin/nologin

Log Rotation Details

Your spam_log file isn't set to be rotated so it might get to be very large quickly. Keep an eye on it and consider adding it to your logrotation.

pico /etc/logrotate.conf
FIND:
# no packages own wtmp -- we'll rotate them here
/var/log/wtmp {
monthly
create 0664 root utmp
rotate 1
}
ADD BELOW:
# SPAM LOG rotation
/var/log/spam_log {
monthly
create 0777 root root
rotate 1
}

Notes:

You may also want to chattr + i /usr/sbin/sendmail so it doesn't get overwritten.

Enjoy knowing you can see nobody is actually somebody =)

Warning : Do this at your own risk

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