Re: [sieve] Fwd: New Version Notification for draft-bosch-sieve-duplicate-02.txt
Stephan Bosch <stephan@rename-it.nl> Fri, 03 May 2013 08:40 UTC
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Date: Fri, 03 May 2013 10:40:02 +0200
From: Stephan Bosch <stephan@rename-it.nl>
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To: Ned Freed <ned.freed@mrochek.com>
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Cc: Sieve mailing list <sieve@ietf.org>
Subject: Re: [sieve] Fwd: New Version Notification for draft-bosch-sieve-duplicate-02.txt
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Op 4/25/2013 11:44 PM, Ned Freed wrote: >> One other thing: we recently defined this great new Sieve use-case >> called IMAPSieve. Is there any application imaginable for the duplicate >> test in this context, i.e. do we want to allow it there? Either way, I >> think we should state its applicability explicitly. > > I think there are legitimate use-cases, but it's also incredibly easy > to misuse > in this context. > > The basic problem is that moving messages around in IMAP doesn't carry > with it > any sort of inherent special semantic and people move messages around > for all > sorts of reasons (or for no real reason at all). This is quite unlike > message > delivery. > > So, for example, you could define a Sieve in IMAP to prevent, say, the > inclusion of a second copy of the same message in a given folder. But bad > things are going to happen if, say, you forget the filter is there and > move > some of the messages out and back in a couple of times. > > We'd have to extend the semantics of the extension substantiantially > to take > care of this, and even if we were to do that actually using it would be > very tricky indeed. > > Since I see the main benefit of this extension as how simple it makes > duplicate checks in Sieve, this usage makes me very nervous, so nervous > that I could certainly accept a "NOT RECOMMENDED" label for this case. Yes, I agree with that. BTW, any further comments on the document as it is now? More thoughts on the ':last' issue? Regards, Stephan.
- [sieve] Fwd: New Version Notification for draft-b… Stephan Bosch
- Re: [sieve] Fwd: New Version Notification for dra… NED+mta-filters
- Re: [sieve] Fwd: New Version Notification for dra… Stephan Bosch
- Re: [sieve] Fwd: New Version Notification for dra… Stephan Bosch
- Re: [sieve] Fwd: New Version Notification for dra… Stephan Bosch
- Re: [sieve] Fwd: New Version Notification for dra… NED+mta-filters
- Re: [sieve] Fwd: New Version Notification for dra… Stephan Bosch
- Re: [sieve] Fwd: New Version Notification for dra… NED+mta-filters
- Re: [sieve] Fwd: New Version Notification for dra… Barry Leiba