このログの意味、解決法を教えてください。

**Unmatched Entries**
dovecot: IMAP(rire): Corrupted index cache file /home/rire/Maildir/dovecot.index.cache: Broken virtual size for mail UID 15391: 3 Time(s)
dovecot: IMAP(rire): Corrupted index cache file /home/rire/Maildir/dovecot.index.cache: Corrupted physical size for uid=15391: 7016 != 7034: 3 Time(s)
dovecot: IMAP(rire): FETCH [] for mailbox INBOX UID 15391 got too little data: 4124 vs 7158: 1 Time(s)
dovecot: IMAP(rire): FETCH [] for mailbox INBOX UID 15391 got too little data: 4368 vs 7158: 1 Time(s)
dovecot: IMAP(rire): FETCH [] for mailbox INBOX UID 15391 got too little data: 7158 vs 7209: 1 Time(s)
dovecot: IMAP(rire): Fixed a duplicate: /home/rire/Maildir/cur/1:2, -> 1258521547.M825213P29481.localhost.localdomain: 1 Time(s)