介紹

IMAP extension (RFC 2342)

功能:

hints about where to locate mailboxes and whether they're private, shared or public.

• Changing the hierarchy separator
• Provides support for public and shared mailboxes
• mails in multiple different locations with possibly different formats

Dovecot creates a private namespace automatically. This automatic namespace creation isn't done when namespaces are defined

IMAP clients, Sieve scripts and many parts of Dovecot configuration use the configured separator when referring to mailboxes.

一共只有 3 種 namespaces:

• private: Typically contains only user's own private mailboxes.
• shared: Contains other users' shared mailboxes
• public: Contains public mailboxes.

Default devocot 是沒有 Namespace 的 prefix 的 !

• Courier you probably had this set to "INBOX."
• UW-IMAP you might have set it to "mail/".

 

---

Courier IMAP

 

You can continue using the same INBOX. namespace as Courier:

namespace private {
  separator = .      <--- UpFolder.DownFolder
  prefix = INBOX.
  inbox = yes
}

• Namespace with prefix="", separator=. (Maildir default): Work.Customers
• Namespace with prefix=INBOX., separator=. (Courier migration): INBOX.Work.Customers
• Namespace with prefix="", separator=/ (mbox, dbox default): Work/Customers

 

---

---

設定的 Options

 

separator

Maildir++ 的 default separator 是 '.'

它與 File System 的目錄結構完全無關, 只是一種表現方式

hidden

hidden: "yes", if this namespace shouldn't be listed in NAMESPACE reply.

inbox

inbox: "yes", if this namespace contains the user's INBOX. There is only one INBOX, so only one namespace can have inbox=yes.

location

default: 在 dovecot 內的 mail_location 設定

location: Mailbox location

list

default: yes        <== listed by LIST command when the namespace prefix isn't explicitly specified as a parameter

value: children    <== 是當有子項目才顯示

subscriptions

default: yes

 

---

Example1:

A server that supports a single personal namespace. 
No leading prefix is used on personal mailboxes and
"/" is the hierarchy delimiter.

# telnet 測試

      Client:   A001 NAMESPACE
      Server: * NAMESPACE (("" "/")) NIL NIL
      Server: A001 OK NAMESPACE command completed

 

Example2:

# A server that contains a Personal Namespace and a single Shared Namespace.

C: A001 NAMESPACE
S: * NAMESPACE (("" "/")) NIL (("Public Folders/" "/"))
S: A001 OK NAMESPACE command completed

 

Examle3:

# 查看某人的 share

C: A001 NAMESPACE
S: * NAMESPACE (("" "/")) (("#Users/" "/")) NIL
S: A001 OK NAMESPACE command completed

C: A002 LIST "" "#Users/%"
S: A002 NO The requested item could not be found.

C: A003 LIST "" "#Users/Mike/%"
S: * LIST () "/" "#Users/Mike/INBOX"
S: * LIST () "/" "#Users/Mike/Foo"
S: A003 OK LIST command completed.

 

---

Courier IMAP telnet test

 

private folder:

...
0 LIST "" "*"
* LIST (\Unmarked \HasChildren) "." "INBOX"
* LIST (\HasChildren) "." "INBOX.Sent"
* LIST (\HasNoChildren) "." "INBOX.Drafts"
...
0 OK LIST completed

 

shared folder:

...
0 LIST "" "#shared.*"
* LIST (\HasNoChildren) "." "#shared.postmaster.Calendar"
* LIST (\Noselect \HasChildren) "." "#shared.postmaster"
0 OK LIST completed

 

---

連 shared folder

 

namespace {
  list = children
  location = maildir:%%Lh/Maildir:INDEX=%Lh/Maildir/shared/%%Lu
  prefix = shared.%%u.
  separator = .
  subscriptions = no
  type = shared
  hidden = no
}

 

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DOC

http://wiki2.dovecot.org/Namespaces