5 messages in net.sourceforge.lists.courier-usersRe: [courier-users] "Mailing Lists"
FromSent OnAttachments
Reikan - Sidney FerreiraNov 18, 2005 5:15 am 
Johnny LamNov 18, 2005 6:31 am 
Reikan - Sidney FerreiraNov 18, 2005 8:59 am 
Sam VarshavchikNov 18, 2005 3:26 pm 
Sam VarshavchikNov 18, 2005 3:35 pm 
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Subject:Re: [courier-users] "Mailing Lists"Actions...
From:Sam Varshavchik (mrs@courier-mta.com)
Date:Nov 18, 2005 3:26:43 pm
List:net.sourceforge.lists.courier-users

Reikan - Sidney Ferreira writes:

Hi! Im working last days looking for info about how IMAP works.

Ok, but <cour@lists.sourceforge.net> would be a better list for this kind of a question.

Unfortunelly Im still with good questions about using it cause of mailing lists. Based in what someone told me, IMAP would allow me to "create a public folder, where each person would access the same messages but would know wich one they already readed" instead of "send 1 copy of each message to each person".

It is true that IMAP allows this to be supported. However, this is not required, and individual IMAP servers may or may not support this functionality. It is available, and can be implemented using IMAP, but servers are not required to implement it.

Your question should really be whether a specific IMAP server implements it.

The reason that I want to deal with it is that I have a project for 12000 people and 0,5KB messages would be 6MB of the space, now imagine they trading messages everyday. So, I want to save space as I can. Can you help me with this question?

As far as Courier-IMAP goes, there are at least two ways to implement something like this. One way is using filesystem permissions-based shared folders, but this requires accounts to be set up as system accounts, which is not usually feasible with 12K+ mailboxes.

With virtual mailboxes, this should be doable by setting up virtual ACL-based shared folders, and using your own custom mail delivery agent that hardlinks the same message file into everyone's mailbox. Well, I can't think of a reason why it WON'T work, let's put it this way.

Follow-up questions to the courier-imap mailing list.