On Thu, Jan 04, 2007 at 09:57:22PM -0500, Stuart D. Gathman wrote:
Unfortunately, too many of my clients customers can't configure a mail
server (or hire someone to do so) to save their life. They are
angry and hostile if I try to explain that "JUPITER" is not actually
a syntactically valid HELO. If only more more big ISPs would start
rejecting on invalid HELO instead of missing rDNS. It is because
big ISPs accept invalid HELO that such people expect it to work.
But if the user sends its mail via their own ISP, you don't get to
see "JUPITER" except in the received headers.
We can expect $bigISP to use a sane HELO parameter...
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