On 1.3.2011, at 14.36, Hajo Locke wrote:

do some tests with lazy_expunge i have 2 short questions. is it possible to set folder for expunged messages to read-only so no user is possible to really delete them?

Currently there's no easy way to do this. You can of course hide the lazy-expunge namespace from users by giving it a random name so users can't find it. A good proper solution would be a namespace-wide default ACL, but there's no support for that yet.

i can use mdbox for expunged-folder. but would'nt it be more functional to use maildir to have possibility to delete separate mails? when using mdbox the clean up by cron would effect always multiple messages with different ages?

You could use maildir, but it would make expunging slower. Anyway, I don't really understand the problem. You can delete separate mails from mdbox just as well as from maildir. "doveadm purge" won't do anything to lazy-expunged messages, you first have to separately expunge them from there as well.