In most companies/organizations, there are different types of devices or applications that require to use of SMTP service to send an email. MS Exchange 2016 / 2013 server can provide this type of service, however, the Implementation is required on the MS Exchange server depends on the SMTP relay requirements as per your environment.
We will describe here all steps for how to configure Exchange Server 2016 / 2013 SMTP relay:
- Verify whether your scenario is External relay or Internal.
- Verify whether applications and devices will authenticate or connect anonymously
- For an authenticated relay, Configure the TLS certificate for the client front end connector
- For the anonymous relay, configure a new receive connector that is restricted to specific remote IP addresses