On Fri, 23 Dec 2011 23:13:43 +0100, Lars Ebeling wrote:

In other words, the HELO domain was faked. 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?

http://www.impsec.org/~jhardin/antispam/milter-regex.conf

change recipient domain in this example, in generic reject anything that your own mta use on sending

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