Webmail is not displaying email content (Corrupt Index Files)

Symptoms

Webmail is not displaying emails. When checking the file system, the mailbox is confirmed to have messages in it.

Cause

Dovecot reads from its index files when it displays emails in Webmail. Corrupted index files can cause some messages to fail to display despite being in the file system.

Resolution

To address this issue, you can remove the Dovecot index files with the remove_dovecot_index_files script, which will force the index files to be rebuilt.

1. Connect to your server using SSH as the root user.
2. Run the following script to clear the Dovecot index files:

CPANEL_WARN: Replace "$cpuser" with the cPanel user's username.

# /usr/local/cpanel/scripts/remove_dovecot_index_files --user $cpuser