[Dovecot] expire-tool stops on first box with nothing to expire in it

[Joseph Tam]

Michael Wessel writes:

> When I run for example:
>
> doveadm -D search -A mailbox Trash savedbefore 60d > /tmp/discard

I previously observed that the "date.saved" field (tested by savedbefore)
seems to be clustered around particular timestamps.

Dumping out this field using

 	doveadm -ftab fetch -A \
 		"mailbox date.saved" \
 		\( mailbox Trash OR mailbox Junk OR mailbox "Deleted Items" \)

it seems the timestamps do not actually correspond to when the client
moves messages to their trash folder, but rather, to the time I query
for it i.e. a query instantiates this value.   This timestamp is then
retained.

In practice, if this query is done on a periodic interval (e.g. daily),
the date.saved will be roughly correct, and is usable as an age test
for expungement.

Is there a way to force this value to be cached when the client actually
saves or moves a message?

Joseph Tam <jtam.home at gmail.com>