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Comment by acidburnNSA | Hacker News Reader

I'm surprised anyone's been getting through at all without perfectly configured SPD, DKIM, and DMARC. I've had a well configured self-hosted personal email server for years and still struggle to get through sometimes, though it does seem to be getting better.

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> perfectly configured SPD, DKIM, and DMARC

Just having them perfectly configured doesn't mean that the receiving servers will also see it that way.

Microsoft servers are particularly prone to randomly failing perfectly fine dkim setups for no reason whatsoever.

‘Randomly’ when you just happen to not be part of the mail cartel, they just can’t say that.

Because it’s not just about configuration, it’s also about reputation and a low sending volume you are in danger of getting dropped merely out of not being a well known sender

“Prove you’re not a spammer by sending a larger volume of emails.” True and diabolical.

I've been wrestling with this for years as well. I hope with these guidelines being published / transparent by the big 3, things behave consistently.

DKIM hasn’t been necessary in my experience, and is still not necessary according to the new Google guidelines if you use SPF.

I am surprised people think deliverability consists of configuring SPF (SPD is Seattle police), DKIM and DMARC. Spammers can do exactly same given low entry barrier.

It's important but have very little connection to deliverability in real world.

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