Hi !!
To answer the second question. We don't *need* to use SPF to
authenticate HELO. Having HELO be a FQN that resolves to the IP of the MTA
authenticates the MTA equally as well as an SPF record - as is recommended
practice.
This will be very nice in a perfect world, nowadays most mta's fail
this condition and is not practical to implement such this checking.
--
Best regards ...
It's a fine line between fishing & standing still
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David Saez Padros http://www.ols.es
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