Spamming problem: Anonymous Spamm being sent out from my server. How to fix?

Hello,
I seriously need help.
I have tried and tried and tried to fix this problem and my server has been unplugged a few times for a spamming problem I cannot fix.
SMTP authentication is enabled
phpsuexec is enabled
Somehow a spammer has made it through my server without using an account of any kind. I have a secure root password as well so it can't be using root.
I do not know how to trace it either... mail headers doesn't show the account name. The account name that comes up is nobody or my server name. So it always comes back to me whenever there is a complaint.
I am running cPanel on the server.
It is Linux 2.4.25 #2 SMP Fedora i686
My server load goes through the roof when the spamm is sent out. I have tried everything I know and I don't know how to stop the spamm from sending out or even from originating from my server! I have contacted cjb [dot] net and paypal reguarding that account and why it should be banned. Hundereds of thousands of emails are sent out about this site from my server past couple of months.

Here is a sample email that was sent out:
(The asterisks are sensored characters due to privacy reasons)

<Class@MyResumeService.cjb[dot]net>
1120533726 0
-helo_name localhost.localdomain
-host_address 127.0.0.1.60538
-host_name localhost
-interface_address 127.0.0.1.25
-received_protocol esmtp
-body_linecount 37
XX
1
****@********

193P Received: from localhost ([127.0.0.1] helo=localhost.localdomain)
by server1.**************** with esmtp (Exim 4.50)
id 1Dpe0c-0004aF-5C
for ****@********; Mon, 04 Jul 2005 20:22:06 -0700
028 Content-Disposition: inline
021 Content-Length: 1102
034 Content-Transfer-Encoding: binary
024 Content-Type: text/html
018 MIME-Version: 1.0
036 X-Mailer: MIME::Lite 2.117 (F2.72)
034 Date: Tue, 5 Jul 2005 03:22:05 UT
051F From: Account info <Class@MyResumeService.cjb[dot]net>
018T To: ****@********
041 Subject: Success - Regarding Your Resume
040R Reply-To: Class@MyResumeService.cjb[dot]net


1Dpe0c-0004aF-5C-D
<HTML>
<HEAD>
<TITLE></TITLE>
</HEAD>
<BODY BGCOLOR="#000000">
<CENTER>
<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" ALIGN="Center">
<TR>
<TD> <A HREF="http://onestopresumeservice.net/resume/32FGFFSJD1a/"><IMG BORDER="0" WIDTH="656" HEIGHT="678" SRC="http://onestopresumeservice.net/images/webTOP5.gif"></A></TD>
</TR>
<TR>
<TD><P ALIGN=Center>
<BR>
<BR>
<BR>
<P ALIGN=Center>
<CENTER>
<TABLE BGCOLOR="ffffff" BORDER="0" CELLSPACING="0" CELLPADDING="0" ALIGN="Center">
<TR>
<TD><P ALIGN=Center>
<A HREF="http://onestopresumeservice.net/resume/32FGFFSJD1a/"><IMG WIDTH="579" HEIGHT="442" BORDER="0" SRC="http://onestopresumeservice.net/images/webAD2.gif"></A></TD>
</TR>
</TABLE>
</CENTER>
<P>
<P ALIGN=Center>
<BR>
<BR>
</TD>
</TR>
<TR>
<TD><A HREF="http://onestopresumeservice.net/resume/32FGFFSJD1a/rem.html"><IMG SRC="http://onestopresumeservice.net/images/webNEWbottom3.gif" BORDER="0" WIDTH="650" HEIGHT="255"></A></TD>
</TR>
</TABLE>
</CENTER>
<P>
</BODY></HTML>

 

 

 

 

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