> So storage's uidvalidity had changed 17,5 minutes after Foobar's index > was created. Was this a real user?
No, this was a test user running a simulation. I can reproduce it at will if you need any more information. > Since both dates are May 14th and > your mail was also dated May 14h, was the user's first mdbox access also > that day? Yes. > Does it keep happening more than once for the same user? Yes. > I heard this happens also after "dsync mirror" The dsync command was not involved. Just IMAP connections and dovecot-lda delivery. > The path mismatch is intended. "Rebuilding indexes" rebuilds all indexes > in all mailboxes. OK.