Hello Is it possible to limit the ability of sharing it?s own mailboxes to only a few users? We have a few sensitive mailboxes of users where the ability to share via IMAP SETACL should be prevented. I tried the following so far? doveadm acl remove -u test at onnet.ch <mailto:test at onnet.ch> INBOX user=test at onnet.ch <mailto:user=test at onnet.ch> admin but when doing this the admin rights are still there doveadm acl rights -u test at onnet.ch <mailto:test at onnet.ch> INBOX vmail at buserver:~$ doveadm acl rights -u test at onnet.ch <mailto:test at onnet.ch> INBOX Rights lookup read write write-seen write-deleted insert post expunge create delete admin Thanks in advance for your help Simeon -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://dovecot.org/pipermail/dovecot/attachments/20180805/d0de2648/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 3696 bytes Desc: not available URL: <https://dovecot.org/pipermail/dovecot/attachments/20180805/d0de2648/attachment.p7s>