Hi Timo, with dovecot --version 1.2.alpha5
namespace shared { separator = / prefix = "shared/%d/%%u/" subscriptions = yes list = yes } and dovecot-acl authenticated lr in /usr/local/virtual/schetterer.com %%u seems not expand to other existing users instead it expands to % i expected showing all other maildir beyond dovecot: Jan 06 23:53:14 Info: IMAP(rob...@schetterer.com): acl vfile: file /var/run/dovecot/user-not-found/%/dovecot-acl not found dovecot: Jan 06 23:53:14 Info: IMAP(rob...@schetterer.com): Namespace shared/schetterer.com/%/: Permission lookup failed from /var/run/dovecot/user-not-found/% i am not clear if its my fault, or some bug -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria