unfortunately I found a bug in Dovecot's ACL handling for shared mailboxes. It turns out Dovecot doesn't enforce lower casing the privileged username to whom the mailbox should be shared to. This results in a invalid configuration. Users get confused, since they passed on a valid email address in their ACL setup.

user=leander@mydomain.localdomain eilrwts
^^ works

user=test@mydomain.localdomain eilrwts
^^ works

user=Leander@MyDomain.LocalDomain eilrwts
^^ Doesn't work

Best regards
Leander Schäfer

Reply via email to