Dbox lost messages

[Fineware PM]

Hello, 

I use dovecot with dbox storage system. 

Today I receive 2 mail (I see that in the maillog ) but I don't find in
INBOX using my IMAP client. 

I look in the files m.* and I find the message that I receive. But I
cannot find it in any IMAP folder. 

I try to run "doveadm force-resync -u user inbox" but nothing change. 

I export all email using the command "doveadm backup -u user
mbox:/tmp/mail:INDEX:/tmp/imap:LAYOUT:maildir++ 

and in the mbox file for inbox I found the 2 mails arrived. 

How I can understand why I cannot see the messages ? or how I can
recover it ? 

Bet regards.
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