On Thu, 19 Mar 2026 08:11:40 +0000
Sad Clouds <[email protected]> wrote:

> On Wed, 18 Mar 2026 21:33:08 -0400
> "John Stoffel" <[email protected]> wrote:
> 
> > So I'm not sure how well this is going to really work for you, since
> > now you will have email showing up at one server or another, though if
> > you setup the primary with the lower MX value it will get almost all
> > the emails.  But you'll still have users checking email on both
> > mailboxes looking for emails.  15 minutes is a long time these days.
> > 
> > I'd strongly suggest you don't do this unless you really really need
> > to do it.  
> > 
> > John
> 
> Have you implemented this before and ran into specific issues? If yes,
> then I would be interested to learn what they were, so I can look into
> them.

A quick follow up for anyone who is interested. During testing I did run
into a few issues with Dovecot "doveadm sync" command, see this link:

https://dovecot.org/mailman3/archives/list/[email protected]/thread/BT5HXXPV43DB7XDJAQFJTGDYWVAJT2CZ/

I can probably work around these issue with a few hacks to my cron
script. Once everything is configured, I will probably run stress tests
that move messages around various mailboxes continuously for 24 hours
and see if during this time "doveadm sync" actually keeps everything in
sync correctly.

I'm using a combination of Inbox, Shared and Public namespaces/folders.
It would be interesting to hear of anyone has done something similar
before and can share their experience.
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