Which of these is a method for ensuring efficient email server performance in a multisite domain?

Ensuring logon traffic stays in the local site is a fundamental approach to optimizing email server performance, especially in a multisite domain. When users log in locally, it reduces latency and the amount of traffic that must travel over a wide area network (WAN). This localized processing of logon requests can significantly enhance response times and reduce the load on central servers.

By keeping traffic within local networks, it not only improves the overall performance for users but also minimizes the risk of network congestion and potential bottlenecks. Localizing logon traffic is particularly important in multisite configurations where users are distributed across different locations; it ensures that their requests are handled quickly and efficiently without burdening the central infrastructure.