On Sun, 2010-08-29 at 23:20 +0100, Ian macdonald wrote: > IMAP(peter): userdb lookup: connect(/var/run/dovecot/auth-master) > failed: No such file or directory > dovecot: IMAP(peter): Namespace 'shared/': Could not lookup home for > user ian You need to setup auth-master socket. For example http://wiki.dovecot.org/LDA#Virtual_users explains how to do that.