Today I feel like an old ham radio operator during the citizen band years.
I am having a slew of spf, hostname , dkim and dmarc failures.
I look them up and yep no reverse, dkim, dmarc or it is unknown.
Hell, one of my doctors uses a service that his email fails dkim. In all
my years I have never had a failed dkim that I remember.
It looks like big mailers have servers barfing email with domains that
are not in dns at all.
I am always looking at better ways to setup postfix?
Are tools like dkim etc, getting to old or being incorrectly used?
--john
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