Most likely some dovecot files under the email box have been broken
Go ahead and remove them and recheck
cd /home/user/mail/domain.com/info rm -fv dovecot*
Then recheck
Similar Posts:
- How to fix dovecot.index: modseq_hdr.log_offset too large
- How to know default webmail client that user uses for email box Horde or Roundcube on a cPanel server
- How to calculate IMAP/POP3 dovecot bandwidth
- How to fix RoundCube’s error: DATABASE ERROR: CONNECTION FAILED!
- cPanel, dovecot. How to recalculate maildirsize