[Dovecot] dovecot bulletins?

[Timo Sirainen]

On Tue, 2009-01-20 at 23:18 +0100, Maciej Uhlig wrote:
> Timo Sirainen:
> > What exactly are they? I guess a global file that is served as a message
> > for all users? 
> Right. With POP3 it is served once - after first user login after the 
> message was placed in bulletin database (just a plaintext file in a 
> directory, for instance).
> 
> > That's more difficult to implement with IMAP than with
> > POP3. 
> You know better, but... just place incoming (bulletin) mail in INBOX.

Well, okay, I was thinking about a way to not duplicate the message to
everyone's mailbox. And I guess with virtual mailboxes there's the
problem that users can't then delete the message (or it gets deleted for
everyone).

So what you want is a mailing list for your users without actually going
through MTA. Shouldn't be too difficult to implement as a plugin I
guess. You'd mainly just need to somehow keep track of what messages
have been delivered to the user. You could maybe even implement this as
a shell script with http://wiki.dovecot.org/PostLoginScripting although
of course then users who have long running imap sessions won't see the
bulletins until they reconnect.

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