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by MrksHfmn 1576 days ago
I also host my mail server on a hetzner server since the mid 2010s. As long as you familiarize yourself with the mechanisms (dkim, dmarc, spf, etc.) and have a mail-tester.com 10/10 score and sometimes look at mxtoolbox, it is absolutely doable. My only major issues were sending to gmail, t-online (telekom) and outlook addresses. But there are also ways to unlock the ip addresses and the delivery team at outlook.com was very helpful.
4 comments

>> As long as you familiarize yourself with the mechanisms (dkim, dmarc, spf, etc.) and have a mail-tester.com 10/10 score and sometimes look at mxtoolbox, it is absolutely doable.

This sentence should be read closely if you're considering running your own mail server. Each point listed is a sophisticated technical topic.

I run my personal mailserver on Hetzner too! They seem to do a good job of keeping their IPs off blacklists compared to most VPS providers.

So far no problems delivering to Gmail. I was initially junked by Outlook, but that fixed itself after a while since I had sent enough emails to build up reputation.

> So far no problems delivering to Gmail. I was initially junked by Outlook, but that fixed itself after a while since I had sent enough emails to build up reputation.

For me, Google has been really relaxed in terms of receiving mail from selfhosted services in the past. Stopped using gmail for monitoring stuff a few years ago, but up until then, every single cron job / monitoring mail was delivered into my gmail inbox. Outlook is another story. They may just throw your mail away without even a bounce. Had to deal with that several times at $PREVIOUS_JOB.

This is also my experience. Outlook and Yahoo are extremely trigger happy, never had an issue with gmail.
> major issues were sending to gmail, t-online (telekom) and outlook addresses

I am considering self hosting but this would mean I would have deliverability issues with around 90% of my messages.

You had major issues delivering email to Outlook and Gmail, which represent the majority of all email recipients, and yet you're describing this as a success story with a tone that "anybody can do it".

I also tried to run my own mail server for years and I also had major issues delivering mail to Gmail and Outlook. Because of this I would never recommend self-hosting email to anybody else. Somehow you have my exact experience and your reaction to it is the complete opposite of my reaction. Weird.