Hi Timo,

thank you very much for your quick reply. I tried that but it is not possible to SELECT such a mailbox.

I have in dovecot.conf:

mail_location=maildir:/data/messages%h

namespace private { separator = / prefix = location = maildir:/data/messages%h inbox = yes list = yes }

namespace public { separator = / prefix = greetings/ location = maildir:/data/greetings%h inbox = no list = yes hidden = yes }

Messages are coming in from EXIM separated by a special HEADER into this two folders. For INBOX this works fine but not for greetings, although the maildir files are being created upon delivery.

Sample IMAP Session AFTER delivering a greeting-type message:

01 OK Logged in.

• LIST (\HasNoChildren) "/" "INBOX"
• LIST (\Noselect \HasChildren) "/" "greetings"
• LIST (\HasNoChildren) "/" "greetings/INBOX" 02 OK List completed.

...

03 select "greetings/INBOX" 03 NO Mailbox doesn't exist: INBOX 04 select greetings 04 NO Mailbox doesn't exist: greetings

...

02 list "" "*"

What is this "\Noselect" mailbox showing up and why is it saying "greetings/INBOX" in the third row when in fact there isn't a mailbox with this name?

I am very sorry for having to bother you again, but I don't know what we are doing wrong here. (Dovecot version is 1.1.16)

Guido Weiler

-----Ursprüngliche Nachricht----- Von: Timo Sirainen [mailto:tss@iki.fi] Gesendet: Montag, 11. Juni 2012 22:48 An: Guido Weiler Betreff: Re: Dovecot Maildir - How to Seperate mail folders

You should be able to do this with namespaces.

namespace { prefix = INBOX/VeryImportantMessages/ location = maildir:/very/important/messages hidden = yes }

On 8.6.2012, at 18.09, Guido Weiler wrote:

Hello Timo,

for one of our latest dovecot/IMAP-projects, we need to separate physical locations of some special IMAP folders. So to make, for example the "INBOX/VeryImportantMessages"-Folder is on a completely different volume or mount point than the mails in INBOX or other user generated imap subfolders.

Can you tell me if there is any possible way to implement this / change it in dovecots maildir implementation, or maybe it is already planned to do so in further versions of dovecot?

We have to treat all messages in that one special folder with an extended backup scenario, and I think it would be the best if we can implement to have an additional mail_location parameter in dovecot.conf (e.g. important_mail_location).

We are somewhat familiar with the dovecot source code since we already implemented plugins and other modifications to dovecot 1.1.16 but any advise or information is very appreciated.

Kind regards,

Guido Weiler