dsync error: Can't sync mailbox tmp: Mailbox isn't selectable

[Hagen Bauer]

Hi,

I am trying to use dsync to migrate from mbox to Maildir with 

  dovecot --version
  2.2.27 ()


The configuration seems to be working and some of the mailbox can be mirrored via

dsync -u username mirror  mbox:/home/username/mail:INBOX=/var/mail/username


I have trouble with one user where I get the error. 

dsync(username2): Error: Can't sync mailbox tmp: Mailbox isn't selectable

Any ideas where to look for hints?

Regards

Hagen Bauer