On 16/05/2025 18:06 EEST Nikolaos Milas via dovecot
     <[email protected]> wrote:
      
      
     Hello,
      
     We are on Dovecot 2.3.18.
      
     Some users are occasionally complaining that all mail vanishes from
     their inbox.
      
     However, we cannot find any indication of deletions or expunge in the
     log.
      
     One explanation could be that mail files are deleted externally (at
     the
     file system level), but I can't imagine what could cause such
     deletions.
      
     How would you suggest us to troubleshoot this further?
      
     We could enable "mail_debug = yes", but this would flood the logs and
     cause performance drop, and the issue is happening rarely.
      
     Any other ideas to troubleshoot these cases in the past (through
     logs)
     or monitor (whatever) for the future?
      
     (The config is listed at the end.)
      
     Thanks in advance.
      
     Best regards,
     Nick
      
     The config follows:
      
 
I would strongly suggest enabling mail_log plugin globally and not just for
protocol imap. This should enable you to see why the mails are deleted.
 
Aki
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