On 9 Sep 2019, at 09:27, Niels Kobschätzki <ni...@kobschaetzki.net> wrote: > The moment I remove those folders, the size gets calculated correctly. > Unfortunately those folders are generated by some clients automatically afaik > (like .INBOX.Trash)
That sounds like a misconfiguration of the IMAP client. Someone has gone in and improperly set INBOX as the IMAP path Prefix in their MUA. I used to have this problem with some users until I implemented repeated and consistent application of a clue bat. I don’t know of a server-side setting to prevent users from screwing up this setting, but maybe? -- but then a lot of nice things turn bad out there
