this post was submitted on 13 Aug 2023
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I have run my own mail server now for 20+ years. its is runnig postfix , with spamassain. the users have imaps, and roundcube www gui.

It had been running fine, and have been updated HW / OS a lot of time over the years, now its runnig on rocky O/S

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[–] [email protected] 2 points 1 year ago (4 children)

Do you know if this setup could run on 512mb of RAM? I tried to set up mailman 3 but it gets OOM-killed immediately

[–] RegalPotoo 5 points 1 year ago

You can, as long as you aren't trying to do virus scanning - ClamAV needs a couple of GB on its own

[–] [email protected] 4 points 1 year ago

Mines running postfix, spamassassin and dovecot and runs pretty happily in 1GB, but when I was running in 512MB Spamassassin would get killed fairly regularly when it ran out of RAM

[–] [email protected] 3 points 1 year ago (1 children)

Doubt it, but it's the spamassasin part that I think won't work.

[–] MrMcGasion 2 points 1 year ago (1 children)

Yeah, I'd recommend using rspamd for lower-end hardware over spamassassin. Might be a bit more work to set up, mostly because it's not as popular, and there are fewer tutorials, but it doesn't have the overhead from running on perl like spamassassin. That said, while there are people using rspamd on systems with 512MB of ram, they are usually smaller, personal setups that aren't dealing with hundreds of emails a day.

[–] [email protected] 3 points 1 year ago

Look a basic VM from OVH or Vultr runs you like $5 USD. I'm talking 1 core 1gb ram. If anyone is offering 512mb for any less than like $2.5 is a scammer. But seriously, $5 is immensely worth it.

[–] Trondk -1 points 1 year ago

Nope sorry, that is to little ram. I don't know how much ram my mailserver uses but will look