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Comment by kureikain | Hacker News Reader

I run an email forwarding service[0] and it's damn hard to get into inbox of any major provider if SPF/DKIM aren't config properly. DMARC or ARC might be optionally but an email without SPF/DKIM, good luck having it hit any inbox.

Office365 is the toughest, email just randomly land on spam no matter what I do. Icloud, actually it's ProofPoint is tough sh*t too.

So I'm so surprise these guide just pop-up now like it's a new thing.

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[0]: https://mailwip.com

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I’ve been running a personal mail server since 2016, and I’ve been struggling mostly with Microsoft off-and-on. I haven’t make any changes since setting up DMARC, SPK, and DKIM in 2016, but I’ll still sometimes randomly get blacklisted for 2~30 weeks for seemingly no reason, and then get unblocked again for seemingly no reason.

It’s recently started happening with iCloud too. For 5.5 weeks any email I sent would either get bounced or land straight in Junk, until yesterday when the powers that be decided my mail was worth delivering again.

I’ve somehow never had an issue with Gmail or Yahoo, and of course never with any other non-big-three mail servers.

Could be your IP block gets the odd spammer or you don't send enough emails and their servers resets you IP address reputation, meaning you essentially become a new email server.

This was my initial thought too. These guidelines have been around for ages, and just now being officially implemented in 2024.

> but an email without SPF/DKIM, good luck having it hit any inbox

And that's a decent thing.

Someone that doesn't do that has no business sending email.

The problem is that even doing that and even sending only a couple of emails a day is still usually considered SPAM.

ProofPoint is indeed disgusting service. Wonder how they proliferated into corporate world so much and so fast.

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