Server migration

[Tanstaafl]

On 10/30/2016 5:32 AM, Sami Ketola <sami.ketola at dovecot.fi> wrote:
> On 28 Oct 2016, at 16.54, Tanstaafl <tanstaafl at libertytrek.org> wrote:
>> Oh... I thought the --useuid option eliminated this problem?
>>
>> https://imapsync.lamiral.info/FAQ.d/FAQ.Duplicates.txt

> It does not. There is no option at IMAP level to set the UID.
> 
> In this case —useuid seems to keep track on source:uid -> dest:uid
> pairs on multiple syncs and uses uid numbers to avoid syncing mails
> as duplicates instead of using headers to do that.

Ok, interesting. So... how does dsync do it? Or would it only work
between two dovecot servers?

I'm interested in migrating from other servers (Office 365 in one case).

Thanks,

Charles