Recent (probably MacOS) mail app provoking endless cyrus.index writes on 2.3 server. [WARNING: DKIM validation failed]

[ktm at rice.edu]

On Thu, Oct 22, 2015 at 10:54:28PM +0200, Eric Luyten wrote:
> On Thu, October 22, 2015 10:39 pm, ktm at rice.edu wrote:
> > On Thu, Oct 22, 2015 at 10:32:40AM -0400, bacon wrote:
> >
> >> Apple released OS 10.11.1 update yesterday.  It shows that it includes,
> >>
> >>
> >> - Fixes an issue where outgoing server information may be missing from
> >> Mail
> >> - Resolves an issue that prevented display of messages and mailboxes in
> >> Mail
> >>
> >>
> >> Does anyone know if this fixed the problem.  I've asked my users not to
> >> use Mail on El Capitan until this bug is fixed.
> >>
> >> Meanwhile, I'm working in my spare time to upgrade my cyrus-imapd on
> >> RedHat Enterprise Linux 6 from the 2.3 series distributed by RedHat to
> >> the 2.5 series which I'll have to build and maintain myself.  That's an ugly
> >> job and one that I don't really want to do.
> >>
> >> Fred
> >>
> >>
> >
> > Hi Fred,
> >
> >
> > It does not appear to have addressed the problem. We are trying to gather
> > more information.
> 
> 
> In
> 
>    https://discussions.apple.com/thread/7267399
> 
> someone states older Cyrus servers are returning a syntactically not quite
> correct response to the EXPUNGE command but I'm having a hard time buying
> this for an explanation.
> 
> Oh, and someone in there asks for help to get the Apple bug report (22996765)
> escalated.
> 
> I think at our site we have reached the count of 100 (one hundred) El Capitan
> Mail.app users.
> 
> 
> Eric.
> 

Hi Eric,

If they are thinking that the example in the RFC is the specification, they are
not correct. The IMAP server responses to determine completion of the EXPUNGE
command are "OK" for a completed EXPUNGE, "NO" for a failure, and "BAD for unknown
command or invalid arguments. Everything after those words are not germane to
whether or not the command completed. The tag is what links the OK to the EXPUNGE
command and not the "EXPUNGE completed". Sigh, they had it right and now it is
broken.

Regards,
Ken
> 
> 
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