OOT: Mail rejected with bogus helo
mkettler at evi-inc.com
Thu Apr 17 14:44:24 IST 2008
Glenn Steen wrote:
>> Not quite right there my friend....
> :-) Look again... This is all about DNS address verification. Not
> relevant to the rejection of a malformed HELO/EHLO.
> The RFCs actually _demand_ that you reject those.
Actually, the RFCs do not demand you reject a malformed HELO, and you know that
as well as I do. However, they do OK it when the malformed HELO will cause your
Received: headers to violate RFC formats.
Regardless it is still 100% RFC compliant to accept a malformed HELO if you
don't ever quote it in a Received: header, or otherwise modify it so the
Received: header you generate is compliant.
Also, this thread is about using an IP as a HELO, which is NOT a malformed HELO
per the RFCs. Therefore it is still against the RFCs to refuse mail because the
HELO is an IP address.
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