[Dovecot] some mdbox mails get lost each day

[Timo Sirainen]

On 9.8.2012, at 11.24, Christian Rößner wrote:

> I had enabled mail_log and search for any kind of errors. None. Only expunge messages from a imap process. Which I thought was Outlook. But isn't.

So there is an imap expunge entry for all of the mails that get lost? You should be able to match that with the IMAP client's IP address by using session IDs, for example:

mail_log_prefix = "%s(%u) <%{session}>: "

Also you may be able to find out what client is doing it by setting:

imap_id_log = *