[Dovecot] Mail migration to dovecot with doveadm backup

[Timo Sirainen]

On Wed, 2012-06-27 at 15:10 +0200, Reinhard Vicinus wrote:
> Hi,
> 
> if i delete the home directory and all content below an existing account 
> user at example.org. Then run:
> 
> /usr/bin/doveadm quota recalc -u user at example.org

Are you sure quota recalc makes a difference here? What if you simply
run doveadm twice?

> and afterwards:
> 
> /usr/bin/doveadm -o imapc_user=user at example.org -o imapc_password=imappw 
> -o imapc_host=local-mailbox -o imapc_features=rfc822.size -o 
> imapc_port=18143 -D -v backup -R -f -u user at example.org imapc:
> 
> dsync(user at example.org): Error: Mailbox INBOX changed its GUID 
> (c92f64f79f0d1ed01e6d5b314f04886c -> 54c23c119d04eb4f005100004f99b03d)
> dsync(user at example.org): Error: msg iteration failed: Couldn't open 
> mailbox c92f64f79f0d1ed01e6d5b314f04886c

Bug/"feature" .. you could try if running with
"imapc:/tmp/imapc-username" instead of "imapc:" helps.