Dovecot Mailbox access error: Panic: file mail-index-sync-keywords

Published by exdone

Posted on November 11, 2018

Error: Mailbox access error: Panic: file mail-index-sync-keywords.c: assertion failed

Cause
Corrupted Dovecot index file.

Resolution
Connect to the server using SSH.

Move the file /var/qmail/mailnames/example.com/john.doe/Maildir/dovecot.index:

# cd /var/qmail/mailnames/example.com/john.doe/Maildir/
# mv dovecot.index{,.back}