Re: [Evolution] Evolution downloads POP3 inbox multiple times

[George Reeke <reeke mail rockefeller edu>]

Dear List,
   I don't know what UIDL extensions are, but I do know that a while
back I had a problem with evolution hanging while downloading emails
from a POP3 server, and the workaround I found (and published on this
list) was to disable POP3 extensions.  Nobody ever answered my question
as to where I could find out what these mysterious extensions do or
whether I would want them some day.
   I also have Rus's problem of multiple downloads when leaving mail
on the server (which I do when traveling so I can download it to my
regular computer when I get home).  So my question for Andre is this:
is the UIDL you are talking about one of the extensions I have to
turn off to get my downloads to work at all?
   Thanks
George Reeke, Ph.D.
Laboratory of Biological Modelling
The Rockefeller University
1230 York Avenue
New York, NY  10021
email:  reeke rockefeller edu


On Tue, 2006-11-14 at 16:42 +0100, Andre Klapper wrote:
> hi rus,
>
> Am Dienstag, den 14.11.2006, 13:36 +0000 schrieb Rus Hughes:
> > We have our own in house POP3 server and have noticed that Evolution
> > users that choose to "Leave messages on server" end up downloading the
> > entire of their inbox again when a new E-mail arrives and was wondering
> > if something was up with our server, or whether it's a bug in Evolution?
> >
> > Any insight would be appreciated, all we can think of is it is because
> > the order of the UIDL changes when the new E-mail arrives?
>
> There are several possible reasons when this happens:
> * You have got several copies in your mailbox
> * The mail server supports the UIDL extension yet changes the message
> UIDs each session
> * The mail server does not support UIDL (which means Evolution has to
> generate UIDs using md5sums of the message headers) but the server
> changes the message headers after download (usually adding a Status: or
> X-Status: header - Evolution's md5sum ignores these, but Evolution may
> be missing other headers that this particular server munges)
> * ~/.evolution/mail/pop/cache-* files are not writable
>
> cheers,
> andre
>
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