On 2023-07-20 5:31 pm, deano-dove...@areyes.com wrote:
On 2023-07-19 4:08 pm, Gerald Galster wrote:
A 50-100 mailbox user server
will run Dovecot CE just
fine. Pro would be overkill.
What is overkill? I always thought it
had a bit more features and support.
For Pro 2.3, you need (at minimum) 7 Dovecot
nodes + HA authentication + HA storage +
(minimum) 3 Cassandra nodes if using object
storage. This is per site; most of our customers
require data center redundancy as well, so
multiply as needed. And this is only email
retrieval; this doesn't even begin to touch upon
email transfer. Email high availability isn't
cheap. (I would argue that if you truly need this
sort of carrier-grade HA for 50 users, it makes
much more sense to use email as-a-service than
trying to do it yourself these days. Unless you
have very specific reasons and a ton of cash.)
High availability currently is cheap with a small two
server setup:
You need 3 servers or virtual machines: dovecot (and maybe
postfix) running on two of them and mysql galera on all
three.
This provides very affordable active/active geo-redundancy.
No offence, it's just a pity to see that feature
disappering.
That's exactly how my own 3-node personal setup works. I shove all I
can into mariadb with galera (dovecot auth, spamassassin, etc) across
the 3 nodes. Dovecot replication keeps the 2 dovecot instances in
sync, the 3rd node is the quorum node for galera.
This is is on 3 cheap VPS' in 3 locations around the US. Mesh VPN
between them for the encrypted connectivity. It works, and it works
well.
And now replication is going away ? A perfectly-well working feature
is being removed ?? It's not as if it's a problematic one, nor would
it interfere with anything if it remained ...
I only see a couple of routes forward, at least for me.
* Stay on the last dovecot release that supports replication.
* Switch away from dovecot and cobble something else together.
* Move to gmail <shudder>
The removal of replication feels very arbitrary.
At what version is replication being removed ? 2.4 I think ? Or, perhaps the
question is which is the last version that WILL still have replication ?
For now I'll be going with option 1 above, staying with the last version to
support it. Sad.
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