Hi! I'm not sure if this is a bug or intended... cyrus checks for mailbox names including "INBOX.INBOX." since 2.5 and prevents creation to stop buggy clients like Apple Mail from recursing. But it still allows eg. INBOX.INBOX.Trash since the check is done after conversion to the internal user.<uid>... format. INBOX.INBOX.(Trash|Sent|Drafts) is widely used by K9 (and others) as it seems. K9 fixed it "recently" ... https://github.com/k9mail/k-9/issues/701 ... but it seems existing configs still use this pattern. Does cyrus intentionally allow user.<uid>.INBOX. and only prevents user.<uid>.INBOX.INBOX.... or is this a bug and will be changed in future versions? With kind regards, Wolfgang Breyha -- Wolfgang Breyha <wbreyha@xxxxxxx> | https://www.blafasel.at/ Vienna University Computer Center | Austria ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus