> On 28 Oct 2016, at 16.54, Tanstaafl <tansta...@libertytrek.org> wrote: > > On 10/27/2016 8:36 AM, Timo Sirainen <t...@iki.fi> wrote: >> On 27 Oct 2016, at 15:29, Tanstaafl <tansta...@libertytrek.org> wrote: >>> On 10/26/2016 2:38 AM, Gandalf Corvotempesta >>>> my only question is: how to manage the email received on the new server >>>> during the last rsync phase? >>> >>> Use IMAPSync - much better than rsync for this. > >> imapsync will change IMAP UIDs and cause clients to redownload all >> mails. http://wiki2.dovecot.org/Migration/Dsync should work though. > > 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. Sami