I do. Run about a half dozen email servers for various organizations. Been doing it for almost a decade for some. Other than initial setup pain, I've had zero problems others describe. I have used (and still run) docker-mailserver, mailcow, mail-in-a-box and mailu. All are lovely in their own way and fit various use cases better than others.
this post was submitted on 12 Jun 2023
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I'm using openbsd with dovcot, opensmtpd on a pi. I used mailhardener to get it scoring well. I've had no issues with it getting flagged.
That is cool. This is the solution I was hoping existed, but someone brought to my attention the need for 100% uptime, an by inference the lack of redundancy on a home solution, so I need to reconsider what I am will to do.
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Jep. running a linux mailserver for now 20+ years
its now running postfix :-), in a vm on proxmox...
Proxmox is awesome. Sort of the answer to most of my server wants.
I ran email server with Mailcow Docker. Easiest way I have found. It is perfect to host your own mailbox but as other have said, the sending from your IP might just get blocked by other big mail servers. Luckily Mailcow allows you to use it as a SMTP relay and you can route outbound mail through the well known SMTP services.
That is a reasonable solution!
At the moment I am just getting handy with proxmox and learning to set that up. My domain provider comes with 3 months of email, and I hope to be ready by then to port it and keep using it.