On 31 Jul 2020, at 14:18, John Regan <jregan...@gmail.com> wrote:
> This mail server has an SPF record for itself, but no DKIM or DMARC. It also
> has a working reverse DNS. Mail is received by this system from two postfix
> relays protected with spamassassin and monitored closely.
Yahoo doesn’t care, and IME will reject mail regardless of settings on your end
based on any single moron files a message as spam, unless you are a large
enough mailer that they actually care and have whitelisted you. That's
basically only google AFAICT.
> Can someone recommend a set of best practices for using postfix to relay mail
> to yahoo/gmail in this way?
You can't fix Yahoo.
--
Hey, how come Andrew gets to get up? If he gets up, we'll all get up!
It'll be anarchy!
