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I'm really confused about namespaces.
Here's the Dovecot tutorial I'm trying to follow:

Can someone explain to me what exactly is being accomplished by publish namespace there?

Does it mean that all accounts from all domains can use /var/vmail/public ? I don't get it...

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Probably better addressed in SuperUser SE – mdpc Dec 20 '12 at 17:09
@mdpc: why superuser? This is an imap server, not client. – mattdm Dec 20 '12 at 17:41
up vote 0 down vote accepted

Does it mean that all accounts from all domains can use /var/vmail/public ?

Yes. Public namespaces are namespaces that are shared by multiple users. You can find more information about them here.

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It's not clear from dovcot example how does mail appear in public namespace in the first place? – Ryan Eckert Dec 22 '12 at 21:47
Just like with "regular" private namespaces, it can either get delivered into the public namespace (possible example use case: a mailing list), or else users can move/copy it there from other mailboxes (if they have write permission to the public namespace). – Celada Dec 22 '12 at 23:17

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