doveadm expunge not expunging anymore

[mabi]

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Tuesday, March 17, 2020 3:26 PM, Sami Ketola <sami.ketola at dovecot.fi> wrote:

> So your rsync did not preserve mail object ctimes. Dovecot uses that for internal date if correct value is not in dovecot.index.cache.

Oh I see, so that's quite unfortunate that rsync does not preserve the ctime. They should have a big warning in their man page...

So what would be the correct process for moving/copying mails from one mailbox server to another in order to avoid this issue?