Re: [cobalt-users] Spam and AV protection

[Parker Morse <morse@xxxxxxxxxxx>]

> I was just wondering if anyone has deployed any sort of email (i.e.
> SPAM) filtering software onto their RAQ?
[snip]
> I've heard of RBL and it should work natively with sendmail - however I
> was wondering if anyone has any advice or attempted this before.

Several of us. I'm using ORBZ on our Qube3, and set it up using Charlie
Summers' extensively detailed instructions for voiding your software
warranty by reconfiguring sendmail. :-) Search the list archives for
"sendmail configuration using m4 on a Cobalt RaQ3 (long)" which was the
subject of Charlie's original message on the subject.

I've got a cron job running which emails a daily count of bounced mail; I'm
stopping anywhere from 40 to 100 per day, and we're a pretty small site.

There are some other basic configuration steps to take, like making sure any
majordomo lists are as buttoned-up as they can be and setting the max size
on list email as low as possible, but the various DNSBLs are the most
effective prevention steps. See the news.admin.net-abuse.email FAQ for
listings of the major DNSBLs - <http://www.spamfaq.net/spamfighting.shtml>.

> Also, any good Anti-Virus filters for RAQ's?

I'd start with the Sanitizer. I think the address was posted a few days ago,
but it bears repeating:
<http://www.impsec.org/email-tools/procmail-security.html>. It's essentially
a canned procmail script which will take you a little while to set up, but
since we installed it we've had zero badtrans or goner detections from
Norton. They've all been stopped at the door.

pjm