More IMAP Annotations (folder display name and translations)

Martin Konold martin.konold at
Sun Sep 25 19:51:07 CEST 2005

Am Mittwoch 21 September 2005 15:44 schrieb David Faure:

Hi David, Berhard and Johannes,

> What happens on renaming?

In short: "Renaming a shared imap folder is bad."

In long: A primary reason why IMAP works so well for incoherent concurrent 
access and off-line mode is the fact that messages never get modified on the 
server. The IMAP protocol enforced the creation of a new message and the 
deletion of the old message instead.

From a semantical point of view a rename of an imap folder is equivalent to a 
modify and leads to _numerious_ problems independent of translations and 

Simply imagine two users create new messages in a shared imap folder and user 
1 renames the folder. How shall the "sync" of user 2 succeed?

Funny enough the separation of display name from the folder name on the server 
can be a valid remedy for Kolab clients.

> And I wouldn't put anything in the spec before Joon confirms whether it's
> OK with him... Outlook does have its limitations, as we all know.

I am waiting for Joon's opinion on this topic some more days.

-- martin

Erlewein, Frank, Konold & Partner - Beratende Ingenieure und Physiker

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