Mailcow on ARM

Ganzjahresgriller

The documentation says: Since the 2024-01 update, mailcow is finally available on ARM64 platforms! Completely! Without any restrictions on functionality!

Does anyone have experience with this? Is this really the case?

My plan is to run a pure Mailcow server on an ARM VPS server (provider Netcup in Germany). I would use Flatcurve as a full-text search engine right from the start. The hardware I would like to use is 8GB RAM, 6 cores. There are not many users, 5, and no Active Sync is used.

Has anyone already got this running and can share their experiences?

Thanks
SW

BornDeranged

Ganzjahresgriller I’ve been running mailcow on a Hetzner arm64 cloud server and I have exactly ZERO problems. One visual glitch regarding the main page (containers are shown as “started on invalid date”), and slightly annoyed by the “aarch64 ⚠️” message that suggests it’s experimental 🥹 - that’s it.

DerLinkman

Ganzjahresgriller My plan is to run a pure Mailcow server on an ARM VPS server (provider Netcup in Germany). I would use Flatcurve as a full-text search engine right from the start. The hardware I would like to use is 8GB RAM, 6 cores. There are not many users, 5, and no Active Sync is used.

Hello 👋
We currently have an issue with flatcurve regarding long and complex e-mail adresses (see mailcow/mailcow-dockerizedissues/5986) but this is depending on upstream (Alpine) i’ve already added the patched fts-flatcurve package to their repos but they did not released it yet, im afraid…

I actually don’t get their release cycle either…

esackbauer

Performancewise that is more than enough. Flatcurve is brandnew, so that would be the only concern I have. Others are not reporting about ARM specific issues, and as it is officially released its fine to use.
My private installation is running on 6 GB Memory and 2 cores (x86_64 though), with approx. 2 GB memory still available.
10 mailboxes, 10 Activesync devices.
However I have clamav disabled (done on the Sophos Firewall MTA).

MrBridgefarm

i’ve used it on arm64 (oracle free tier) 4 ocpu 24gig mem
And it has run perfect, until the new release, there is a bug on it. It’s only on the admin logpage, the server is still running.
It works fine on arm.

Ganzjahresgriller

Yes ist works! My server is live and i am syncing mailboxes. The Server does not send EMails and the DNS Entrys do not show to the new machine. but i have this entrys in the Postfix log:

Any Idea?

DocFraggle

this sounds like your monitoring system tries to connect with a VERY old SSL cipher which the current postfix configuration does not accept. See here:

https://mailcow.email/posts/2024/release-2024-06/#postfix-tls-11-tls-10-discontinuation

Ganzjahresgriller

There is currently no monitoring system running against it. Actually nothing and nobody should contact this server. So I assume that the problem is not with my machine

DocFraggle

favourable.monitoring.internet-measurement.com and graceful.monitoring.internet-measurement.com seem to originate from the internet though 😉
I wouldn’t care too much about those, then

Ganzjahresgriller

Thanks for your reply

esackbauer

https://internet-measurement.com/

This domain is operated by driftnet.io. It is used to discover and measure services that network owners and operators have publicly exposed.

Traffic from this domain is not an attack. Traffic from this domain will never attempt to log in to your systems.

Ganzjahresgriller

Short feedback. The system has been running productively for 7 days now. Absolutely stable, no problems

Ganzjahresgriller

Thanks for the tip but I haven’t been able to find that out yet