On 27.3.2012, at 4.16, Joseph Tam wrote:
However, I noticed a strange thing: querying what would have been deleted doveadm -ftab fetch -A "date.saved" mailbox Trash savedbefore 7d showed many date.saved values are clustered around the same timestamp, even among different user's Trash mailbox. ... I can't explain why many different users would have messages with the same (or closeby) date.saved value. Which mailbox format? With Maildir the date.saved is taken from dovecot.index.cache file, and in some cases that might get dropped. If it does, then it fallbacks to using the file's ctime.
mbox.
Ah, with mbox there isn't any usable fallback for date.saved. If it's not in dovecot.index.cache, the current time is used.
These "wrong" values shouldn't cause problems with expunge queries since they err on the side of safety.
Right.