dovecot - Nov 2014 - Move mail behavior

Hi!

I've recently migrated my IMAP mail setup from a server running an older
Debian Squeeze with dovecot 1.2.15 to a new Debian Jessie system with
dovecot 2.2.13. In the old setup, it used to be so that a mail moved
from a folder to another one was marked as deleted in the originating
folder (in dovecot 1.2.15). In the new setup, the mail just disappears
from the originating folder (with dovecot 2.2.13). The mail arrives
properly in the target folder, so that's fine. But I actually liked the
old behavior.

I observe this with Evolution as well as Icedove (Thunderbird) mail
clients, which is why I assume that it's actually a change in the IMAP
server behavior.

Is it supposed to behave like that? Is there a way to configure this? 

Regards,
Martin

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On Mon, 24 Nov 2014, Martin Stigge wrote:
> I've recently migrated my IMAP mail setup from a server running an
older
> Debian Squeeze with dovecot 1.2.15 to a new Debian Jessie system with
> dovecot 2.2.13. In the old setup, it used to be so that a mail moved
> from a folder to another one was marked as deleted in the originating
> folder (in dovecot 1.2.15). In the new setup, the mail just disappears
> from the originating folder (with dovecot 2.2.13). The mail arrives
> properly in the target folder, so that's fine. But I actually liked the
> old behavior.
Did you have migrated the old configuration to the new server?

Post the config of both servers.

- -- 
Steffen Kaiser
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On Wed, 2014-11-26 at 07:31 +0100, Steffen Kaiser wrote:
> On Mon, 24 Nov 2014, Martin Stigge wrote:
> 
> > I've recently migrated my IMAP mail setup from a server running an
older
> > Debian Squeeze with dovecot 1.2.15 to a new Debian Jessie system with
> > dovecot 2.2.13. In the old setup, it used to be so that a mail moved
> > from a folder to another one was marked as deleted in the originating
> > folder (in dovecot 1.2.15). In the new setup, the mail just disappears
> > from the originating folder (with dovecot 2.2.13). The mail arrives
> > properly in the target folder, so that's fine. But I actually
liked the
> > old behavior.
> 
After a little more digging I found that dovecot 2.2 implements the IMAP
MOVE extension from RFC 6851 which my clients also support. Before that,
a copy with delete was used, explaining the different behavior. I also
see MOVE announced as a capability, so my clients use it. So, no config
issue, just a new feature.

Regards,
Martin