Self hosting email, FLOSS, Python ... (lemmy.sdf.org)

submitted 6 days ago* (last edited 6 days ago) by [email protected] to c/[email protected]

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Hi,

I would like to host my own email server.

I know the pros and cons of doing so, please do not post about the advantage or disadvantage, there is others open topics for it.

I would like my setup fit those "requirements"

FLOSS
Be able to create complex rules for incoming/outgoing email ( with 🐍 Python language preferably ).
- based on any properties (subject, ip, header, size, attachment, signed, encrypted, etc.. )
- able to modify, delete, fw, etc... the email
Manage the limit of sending by size and number of outgoing over time (min, hours, week, etc..)

If you know a matrix comparison between email servers I'm all ears.

If you have any feedback with a solution this is most welcome too.

I plan to update this post to create a matrix/spreadsheet of all the solutions that I'll gather.

Thanks.

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[-] [email protected] 15 points 6 days ago* (last edited 6 days ago)

See my personal notes. I do selfhost mail server, but on a vps to have a good IP

Being doing so for 20+ years and recently rebuilt the entire stack.

See https://wiki.gardiol.org/doku.php?id=email%3Astart

In short, I use postfix+dovecot, with opendmark and opendkim. Setup proper DNS email specific records and a few more steps.

Overall it runs fast and perfect on 4gb ram very old dual core atom CPU.

[-] [email protected] 3 points 6 days ago

Too lazy to read wiki link, but I too postfix/dovecot

this post was submitted on 25 May 2025

27 points (86.5% liked)

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