If you have 2 MySQL servers configured as Master/Master replication, then you want to make sure those 2 servers are in sync all the times. Generally speaking, hardware failure or lost connection etc could break replication and cause the servers to be out of sync, and MySQL can automatically re-establish replication once the issues are fixed. However, there are cases when MySQL cannot automatically fix itself and manual intervention is required. Therefore it is important to monitor the replication status of the system. We have produced a utility, DSMySQLMonitor, that can monitor the replication status of a MySQL Master/Master system, and send alert messages to the system administrator. In the event when out of sync is detected, DSMySQLMonitor also write the event into the Windows event log.
Your mail configuration and replication_status.log can be located at Deepnet DualShield\MySQL\Monitor folder.