[Dovecot] doveadm altmove to gzipped-mdbox

[Timo Sirainen]

On Fri, 2013-05-17 at 15:59 +0200, Claus wrote:
> Hi,
> 
> im wondering if it's possible to store old messages in a compressed 
> mdbox on alternate storage.
> The main storage is uncompressed mdbox.
> 
> I tried something like: doveadm -Dv -o "plugin/zlib_save=gz" altmove -u 
> testuser sentbefore 8d
> 
> Could someone tell me if it's possible and give me a hint how this can 
> be done?

I think that command should have worked, assuming zlib plugin was
loaded. But it would have compressed mails in the primary storage as
well for those files where it was moving mails away from (altmove runs
implicit purge).