How to install spam log.

///** Following are the steps to install Spam_log   **/// :--

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 1>  Login to your server & su - to root.

 2> Turn off exim while we do this so it doesn't freak out :-

#/etc/init.d/exim stop

 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

4> Create the spam monitoring-script for the new sendmail :-

#pico /usr/sbin/sendmail

Paste in the following:-

#!/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);

 5> Change the new sendmail permissions :-

#chmod +x /usr/sbin/sendmail

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

7> Start Exim up again :-

#/etc/init.d/exim start

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 :-

/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

}