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[sendmail] One Spam Per Day..

 
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Old 03-09-2015
[sendmail] One Spam Per Day..
Hi,
I have sendmail 8.14.4 on a CentOS 6.6-RELEASE virtual machine. This box is primary MX for our domain, and everything is swell.

Every single day, one spam gets through. This spam has the 'From' address '<>', and my google search reveals that blocking the null sender is not a good idea.

In my sendmail.mc, I have:

dnl FEATURE(`enhdnsbl',`sbl-xbl.spamhaus.org',`"Message from "$&{client_addr}" rejected - see: http://www.spamhaus.org/sbl"

But this blocks e-mail from two of our clients.

One spam per day isn't that bad, but it's frustrating that I can't stop it. The IP is different every day. The e-mail always comes from 'david[randomcharacters]@something.com, so I can't block 'david,' because that will stop legitimate e-mails.

I think that this is a job for procmail, but reading the recipes, they look like they were written in postgrad maths.

Can someone help?
 
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LEARN ABOUT DEBIAN

claws-mail-spam-report

CLAWS-MAIL-SPAM-REPORT(1)				      General Commands Manual					 CLAWS-MAIL-SPAM-REPORT(1)

NAME

       claws-mail-spam-report -- Mail notification using laptop's mail LED

DESCRIPTION

       This manual page documents briefly the claws-mail-spam-report

       This manual page was written for the Debian distribution because the original program does not have a manual page.

       claws-mail-spam-report is a plugin (loadable module) for the Claws Mail mailer.

       This  plugin  allows  sending  reports  about received spam messages to online spam harvesters, in order to improve the shared databases of
       known spam.

       Support	includes  two  sites:  www.signal-spam.fr      and  www.spamcop.net,  and  also  the   Debian	lists	spam   nomination   system
       (http://lists.debian.org/archive-spam-removals/review/).

USAGE

       Before using a plugin you must instruct Claws Mail to load it on startup.

       For  this you must go ``Configuration'' menu on main window toolbar, open ``Plugins...'' dialog, click on the ``Load plugin...'' button and
       select the plugin file, named spam_report.so, and press the ``Open'' button.

SEE ALSO

       claws-mail (1), claws-mail-extra-plugins (1).

AUTHOR

       claws-mail-spam-report was written by Colin Leroy colin@colino.net

       This manual page was written by Ricardo Mones mones@debian.org for the Debian system (but may be used by others). Permission is granted	to
       copy,  distribute  and/or  modify this document under the terms of the GNU General Public License, Version 2 any later version published by
       the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

															 CLAWS-MAIL-SPAM-REPORT(1)