Where would you find replication errors if changes made to an OpenLDAP directory are no longer being replicated to the slave server?

In the context of OpenLDAP replication, when changes made to a directory are not being successfully replicated to a slave server, errors related to the replication process are typically logged in specific files associated with the server's configuration.

The option indicating "192.168.0.3: 389.rej" hints at a rejection file specific to the replication process for the server at the address 192.168.0.3 on port 389. Rejection files are created when specific changes cannot be applied to the replica server due to various reasons, such as conflicts, missed changes, or the server being down at the time the updates are sent. As such, examining this file would provide insight into what changes have been rejected and why.

This makes it the logical choice for tracking replication errors since it directly correlates to rejected changes specifically related to the given server and port, allowing the administrator to troubleshoot which entries are causing issues within the replication process.