Hi !!
Before, an SMTP+SPF receiver would only look at the HELO argument if the
return-path was blank. Now, SMTP+SPF receivers MAY look at the HELO
argument all the time, and use it as the source of the
<responsible-sender>; if the HELO check returns a FAIL, the entire SPF
result is a FAIL and the SMTP receiver does not have to check the
return-path. Otherwise, use the MAIL FROM return-path as the source of
the <responsible-sender> and proceed as usual.
While testing HELO, as while testing the header from for a null sender,
it's ok to convert a softfail result to a fail result ?
--
Best regards ...
Famous last words - Lion at the Circus of Rome: Burp..
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