In a previous article, Configure Kemp Load Balancer for Exchange 2016, we explored how to make client access services highly available for Exchange 2016. In this article, we continue that trend by making the Simple Mail Transfer Protocol (otherwise known as SMTP) highly available.
If you don’t have a load balancer you can download one for free from Kemp. Kemp’s free appliance is what we will use in this guide.
Don’t worry. Despite the focus being on Kemp, you can translate these principles to any vendor.
Let’s get started!
In our example below we plan to have two Exchange 2016 servers behind a load balancer in a single site; EX16-01 and EX16-02.