We tried to repair the smtp table in the eximstats database and it showed the following result.

myisamchk: error: ‘/var/lib/mysql/eximstats/smtp.MYI’ is not a MyISAM-table

Fix:

ls -al  /usr/local/cpanel/etc/eximstats_db.sql

mysqladmin drop eximstats

mysqladmin create eximstats

mysql eximstats < /usr/local/cpanel/etc/eximstats_db.sql