Re: [Evolution-hackers] Re: about evolution imap local email storage

[Not Zed <notzed ximian com>]

On Thu, 2003-04-17 at 14:39, henry jia wrote:
> Hi, all,
> 
> This feature of storing the mails read is good for the offline support. 
> But it is a serious issue for the users with a lot of mail. In an 
> enterprise enviroment, people always share the file server. We can image 
> what will happen when they store they mails on the server. If a person 
> has 10,000 mails and each mail is 100K. Then he'll use 2G (twice of the 
> storage of mail server) to store. This always happens. I heard a lot of 
> such things.

Enterprise have different mechanisms available to them anyway.

e.g. mail delivery via /var/mail, via nfs, to nfs mounted home
directories.  or via pop to nfs mounted home directories.  via access to
remote dumb ('thin') clients using X, off a server, etc etc.

In few cases is imap ever a suitable protocol in an enterprise
environfment.

> Maybe a method is to use some preference to let the user decide whether 
> or not to store the mails when reading. Thus, we no need to change the 
> current operating mode and just add another proposal.
> 
> Regards
> 
> Henry
> 
> Antonio Xu wrote:
> 
> > Hello, Not Zed
> >          I have discussed this issue with Fejj. I think it is possible 
> > to add a feature which is allow user specify whether make evolution 
> > copy email to local. So for Sun Ray customer, they can make evolution 
> > leave eamil on server instead of copy them to local.   this feature is 
> > very userful for intranet user too, they don't need to worry about 
> > intranet status, they could turn off the switch and make evolution 
> > leave email on server without copying them to local. I think it is 
> > very useful feature, but I wanto to know when we can add this feature 
> > in evolution, Could you show me the date when we can doing it for 
> > evolution?
> >          I have added some comments below. Please read it.
> >
> > Best regards,
> > Anto
> > Not Zed wrote:
> >
> >> On Wed, 2003-04-16 at 00:29, Antonio Xu wrote:
> >>  
> >>
> >>> Hello, NotZed
> >>>          I have some questions about imap local email storage. I 
> >>> found evolution will copy every readed email's source and its html 
> >>> body to local. so if I have 1 GB emails on server, I would have 2 GB 
> >>> emails in local imap storage. I think it is a very serious problem. 
> >>> Why did   
> >>
> >>
> >> Do you have 1GB of email on your server?  i.e. just saying a problem is
> >> possible doesn't mean it occurs or in practice is a real issue.
> >>  
> >>
> > We realy have some customers whose email more than 1GB on imap server. 
> > For Sun Ray customer, whose home direcotory leave on server, if 
> > evolution copy every imap email to local,  and leave original email on 
> > imap server. it will waste storage of server.
> >
> >>  
> >>
> >>> evolution copy every readed email to local? Could we remove this bad   
> >>
> >>
> >> Because the imap 'cache' isn't really a cache, and it was written pretty
> >> simply.
> >>
> >>  
> >>
> >>> feature? I think we should leave  emails on server instead of copy 
> >>> it at local, that is why we using IMAP.  I know this feature will be 
> >>> helpful   
> >>
> >>
> >> I'm not sure we want to remove it.  Because it provides a transparent
> >> and more complete 'offline' mode.  Without it we may need to re-copy
> >> stuff for offline mode operation back off the server when we go back
> >> offline, because, because of the way offline mode works, the imap code
> >> deosn't know what files are needed for offline mode until it actually
> >> goes offline.  If you are going offline, and you're using a modem, the
> >> last thing you want is to have to re-copy mails that got expired from
> >> your cache.
> >>  
> >>
> > In fact, we don't need to remove this feature, but we must add a 
> > switch to allow user specify whether make evolution copy  email to local.
> >
> >>  
> >>
> >>> when evolution switch to offline, but evolution have another feature 
> >>> which can allow user download every email from server before switch 
> >>> evolution to offline. I suggest this issue should be solved before 
> >>> evolution 1.4 release. I have seen your and fejj's comment on bug 
> >>> #21894. When will you begin solving this issue?    
> >>
> >>
> >> Well, the newer/next version of outlook always works off local email,
> >> and only uses the server connection to download the mail once/as a
> >> backup.  It goes into 'offline' mode implictly, hiding the
> >> network/server problems from the user, and letting them take more
> >> advantage of the local grunt computer workstations now posess.
> >>
> >> So this way of working isn't completely unexpected/different from other
> >> similar mail clients, and takes advantage of vastly under-utilised
> >> resources on most desktop machines.
> >>
> >> Its also way too big a change to be going into 1.4 at this point.
> >>  
> >>
> > I know it is too hurry to add  this feature into 1.4, but when can we 
> > begin doing it?
> >
> >>
> >>  
> >>
> >
> >
> >
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> 
>