from unknown (HELO localhost)

["Alan K. Jackson" <alan@xxxxxxx>]

What is the best way to filter mail that has the line below in the
header? I presume they are from open relays, most of which appear to be
from various cable and dsl accounts. I get 3 to 5 of these a day in my
personal mail so there is no telling how many my customers are getting.

Thanks,
Alan Jackson
Ad-Vantatge Multimedia


from unknown (HELO localhost) (127.0.0.1) by
localhost.various_domains.com with SMTP; Thu, 11 Dec 2003 11:48:01 -0800

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