spamassassin-users December 2011 archive
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spamassassin-users: Re: Am i sending spam?

Re: Am i sending spam?

From: David B Funk <dbfunk_at_nospam>
Date: Fri Dec 23 2011 - 23:19:51 GMT
To: users@spamassassin.apache.org

On Fri, 23 Dec 2011, David F. Skoll wrote:

> On Fri, 23 Dec 2011 23:13:43 +0100
> "Lars Ebeling" <lars.ebeling@leopg9.no-ip.org> wrote:
>
>>> We automatically block mail from anyone who HELOs as our machine
>>> (unless it really *is* from our machine, of course!)
>
>> how do you do that?
>
> We use MIMEDefang which lets you code tests like that in Perl.
> (So this is done outside of SpamAssassin, but you may be able
> to hack a SpamAssassin rule to do it too.)

Ideally this sort of check should be done at the incoming MTA (mx)
level (before it ever gets handed to SA). Right up front do your HELO,
DNS, DNSBL checks of the opening connection and reject right there.
Why let spam in the front door if you know you're going to reject it
later.
Thus these sort of tests are MTA specific. You need to know what
your MTA is and check the appropriate FAQs, lists, config resources
for your MTA.

-- Dave Funk University of Iowa <dbfunk (at) engineering.uiowa.edu> College of Engineering 319/335-5751 FAX: 319/384-0549 1256 Seamans Center Sys_admin/Postmaster/cell_admin Iowa City, IA 52242-1527 #include <std_disclaimer.h> Better is not better, 'standard' is better. B{