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Date: Wed, 16 Apr 2003 13:40:10 +0400
From: Solar Designer <solar@...nwall.com>
To: popa3d-users@...ts.openwall.com
Subject: Re: Handling the 'DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA' message?

On Wed, Apr 16, 2003 at 07:12:34PM +1000, Daniel wrote:

Hi Daniel,

> After installing SquirrelMail (which utilises uw-imap) I initially switched to using ipop3d
> because of this 'DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA'
> problem.

I'm not familiar with SquirrelMail, but can't it work with an IMAP
server other than UW-IMAP?

> But decided I prefer the enhanced security that popa3d provides for OpenBSD server.
> 
> So, I switched back to using popa3d.

Good.

> However, when I get home I use my normal email client (Calypso ;-) to retrieve/remove
> the inbox email from my server and keep it locally. But it removes this file which affects my other
> imap folders (sent, deleted etc)

Well, if you switch to a better IMAP server, you wouldn't have this
problem.

> Since I can't make my email client ignore the above messages, and really
> want to keep popa3d in place, I would really appreciate any worthwhile hack that
> could make popa3d ignore this message.

I am willing to do such a hack if this work is paid for, at my
consulting rate for Openwall software ($40/hour currently).  This
service is explained at http://www.openwall.com/services/

I expect to be done in under 3 hours (the minimum for consulting work,
for it to be worth the "context switch" and handling payment).

If this is needed by more than just you (maybe Dan?), the amount paid
may be divided between several of you.  With your permission, I would
make this patch free software available to everyone and would give you
proper credit for paying for this work.

Whether it will become a part of the official popa3d or not will
depend on how small I can make this change to be, re-arranging some of
the existing code first.  But regardless of this, any paid work in
this area actually helps me dedicate more of my time to other free
software activities.

> I'm not a developer, but can it really be that hard to implement this change??

It's not hard to do in the trivial way.  However, that will add much
complexity to the code.  And I want to keep popa3d simple.  I view
this simplicity of popa3d as a very important advantage.

The reason this will add complexity is that the message numbers in
mailbox and message numbers seen via POP3 will no longer match, and
the mapping between the two will depend on whether or not there's this
special message.

-- 
Alexander Peslyak <solar@...nwall.com>
GPG key ID: B35D3598  fp: 6429 0D7E F130 C13E C929  6447 73C3 A290 B35D 3598
http://www.openwall.com - bringing security into open computing environments

> On 12/04/2003 at 3:37 pm Solar Designer wrote:
> 
> >On Thu, Apr 10, 2003 at 03:37:46PM -0700, Dan Hollis wrote:
> >> Has anyone wrote a patch for popa3d to skip over the 'DON'T DELETE THIS
> >> MESSAGE -- FOLDER INTERNAL DATA' that uw-imap creates in mailboxes?
> >
> >This has been asked for once, but I don't know of an existing patch to
> >do it.
> >
> >It's not hard to do, but I clearly wouldn't want to complicate popa3d
> >with a hack like this, especially given that I see very little use in
> >combining popa3d (with its security as the primary goal) and uw-imap
> >(with doesn't care about its security) on one box.  This is not the
> >only IMAP server out there.  For example, you might want to look at
> >http://dovecot.procontrol.fi
> >
> >--
> >/sd

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