Dovecot with dbox indexing weirdness

Hello all,

I run a local dovecot imap server, with dbox storage in my home directory.

It works well, but everytime I restart the machine, it seems according to lsof to reindex everything (and I am sitting with 250k mails).

Is this the intended behaviour? I would expect it to happen only once or on update of a folder?

regards, Coert