v3.1 configuration example
PTR and forward DNS plan
Review and adapt this example to your topology, product version and security requirements.
192.0.2.25 -> mail25.example.net
mail25.example.net. 3600 IN A 192.0.2.25
HELO/EHLO: mail25.example.netImportant: replace example addresses, credentials, hostnames and paths. Validate syntax before deployment.