Description
In /var/log/maillog the following output is seen and needs to be reset.
Error: fts_solr: Lookup failed: 401 Unauthorized
Workaround
The /etc/dovecot/fts.conf file only contains a plugin setting for local authentication and can be moved along with an RPM reinstall. This is done by doing
mv /etc/dovecot/fts.conf{,.OLD}
yum reinstall cpanel-dovecot-solr