On 26.2.2013, at 12.08, Peer Heinlein <p.heinlein@heinlein-support.de> wrote:

I have a mbox-User with some crazy foldernames:

-rw------- 1 vmail vmail 19238931 17. Dez 2011 Foo & Co -rw------- 1 vmail vmail 82415 19. Nov 22:06 Foo &- Co

Dovecot can't handle that correctly:

# dovecot mailbox list -u user Foo & Co Foo & Co

dsyncing those folders produces some errors:

dsync(awad): Error: Mailboxes don't have unique GUIDs: 228d0731cb186750e9150000a69b85fa is shared by Foo & Co and Foo & Co

I remember looking at that earlier and deciding that it's not really fixable without adding a lot of code complexity. Create a script to fix the mailbox names before running dsync. (doveadm mailbox mutf7 is helpful for checking validity).