dsync: INBOX Can't be deleted

[Marc Schiffbauer]

* Timo Sirainen schrieb am 26.01.16 um 16:00 Uhr:
> 
> > On 26 Jan 2016, at 15:56, Marc Schiffbauer <m at sys4.de> wrote:
> > 
> > * Sami Ketola schrieb am 23.01.16 um 23:27 Uhr:
> >> 
> >> 
> >> On 23/01/16 15:33, Robert Schetterer wrote:
> >>> for multiple advanced imap settings at migration you might use 
> >>> imapsync not dsync Best Regards MfG Robert Schetterer 
> >> Sure but imapsync does not preserve message UID's which means that users 
> >> end up redownloading all their messages or message/UID mismatches will 
> >> happen.
> > 
> > IIRC that is not true. Some years ago I migrated a server to dovecot and 
> > managed to do it with proper UID migration. No clients were required to 
> > re-download Mail. Nor over IMAP neither POP3.
> 
> IMAP protocol doesn't have a way for clients to specify UIDs.
> Especially UIDVALIDITY can't be preserved in any way. IMAP clients
> don't necessarily make it clearly visible that they're redownloading
> mails though. With POP3 clients if they use the keep-mails-on-server
> it pretty much has to redownload mails as duplicates. Unless the UIDL
> was based on some email headers or such, the POP3 UIDL can't be
> preserved either.

IDNRC ;-)

Then I am pretty sure that I used dsync. Because I AM sure that I had no 
issues with re-dpwnloadeing and that I had an eye on especially on that.

-Marc


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