This simple procmail recipe can be easily installed into linux or unix
system using procmail, to block all emails with attachments ending in any of
these suffixes:

.vbs, .wsf, .vbe, .wsh, .hta, .scr, .pif, .com, .exe, .shs, .bat, .bas,
.scr, .eml, .dll

You may edit the line beginning with "ATTACH=" and the line beginning with
"* name=" to remove or add suffixes.

After you edit it as necessary, do the following (as root):

# touch /var/log/virus.log
# mkdir /home/antivirus
# touch /home/antivirus/virus.save

Then to install and start the recipe, do the following:

# cp -p /etc/procmailrc /etc/procmailrc.BACKUP

(the above line may give you an error messsage if you don't already have an
/etc/procmailrc file; but if you do have one, it'll create a backup for you
in case you've made any mistakes)

and

# cat ./etc/procmailrc > /etc/procmailrc

That's it.  Your recipe is installed and working.  And will restart whenever
you restart your system.

If you don't feel comfortable installing it, please contact nobaloney.net;
we can do the install for us$50 per system.  But it's easy to do it yourself.

http://www.nobaloney.net/contactus.html