Fri, 10 Apr 2026 06:34:48 +0000 https://bugs.horde.org/ticket/6984 pb showing folders named INBOX.* following Bug: 6951 I have a folder called ".INBOX.Sent". It appears like this in IMP : - INBOX +-- Sent - INBOX ... the second INBOX is not clickable. The expected tree is : - INBOX +-- INBOX +-- Sent Fri, 27 Jun 2008 08:24:40 +0000 https://bugs.horde.org/ticket/6984#t46922 > I have a folder called ".INBOX.Sent" How is that a legal mailbox name? In that mailbox, your base namespace would necessarily have to be '' (blank). As such, that mailbox is correctly identified as 'INBOX.Sent', NOT '.INBOX.Sent'. You simply *can't* have an empty mailbox name. See RFC 3501 [7.2.2]: The hierarchy delimiter is a character used to delimit levels of hierarchy in a mailbox name. By definition, a mailbox name is *1* or more characters. See RFC 3501 [9]: mailbox = "INBOX" / astring astring = 1*ASTRING-CHAR / string ASTRING-CHAR = ATOM-CHAR / resp-specials Additionally, this mailbox requires that its parent is the mailbox ''. However, that mailbox name is reserved by list as a method to determine what the hierarchy delimiter is for a given reference (RFC 3501 [6.3.8]): An empty ("" string) mailbox name argument is a special request to return the hierarchy delimiter and the root name of the name given in the reference. Your mailbox is invalid. I don't see a need to workaround invalid mailbox names. I don't care if other mail programs can handle it or not either. Fri, 27 Jun 2008 17:23:11 +0000 https://bugs.horde.org/ticket/6984#t46948 > Your mailbox is invalid. I don't see a need to workaround invalid > mailbox names. I don't care if other mail programs can handle it or > not either. I can't tell you what program did create that folder. I just know that a few users here have it. I don't know if the folder name is valid, but I know that the IMAP server and other apps like thunderbir/outlook do handle it. Here is the output of the IMAP server : a003 list "Folders" "*" a003 OK LIST completed a003 list "Folders" "*" a003 OK LIST completed a005 list "Inbox" "*" ... * LIST (\HasNoChildren) "." "INBOX.INBOX.Ronan" * LIST (\HasNoChildren) "." "INBOX.INBOX.Sent" * LIST (\HasNoChildren) "." "INBOX.Sent" * LIST (\HasNoChildren) "." "INBOX.Notes" ... I reported the bug because I thought that there was one, and event this type of naming doesn't usually happen, it can happen. Mon, 30 Jun 2008 11:26:21 +0000 https://bugs.horde.org/ticket/6984#t46982 I've just updated from CVS and it is working fine in IMP/DIMP. Thanks. Mon, 30 Jun 2008 16:00:58 +0000 https://bugs.horde.org/ticket/6984#t47005