I tried to trace a message on Zimbra and this is the error I get.

[zimbra@mx root]$ zmmsgtrace -s test.user
DB: Can't connect to dbi:mysql:database=zimbra_logger;mysql_read_defaul t_file=/opt/zimbra/conf/my.logger.cnf;mysql_socket=/opt/zimbra/logger/db/mysql.sock: Can't connect to local MySQL server through socket '/opt/zimbra/logger/db/mysql.sock' (2)

What do do to rectify this, as some of my users call for message tracing regularly and it's making me and my team look really bad that we can't do anything for them.
FYI: I use Zimbra message trace on my test server running Zimbra 5