Exchange 2016 installs the open source spam gateway

Spam worry exchange 2019 (currently does not support SCL rules, can use blacklist and whitelist and gray list functions)

Download the virtual machine from https://efa-project.org/

Connect to the ESXI virtual machine and select the downloaded OVF file to deploy the virtual machine

Login console settings, password is: EfaPr0j3ct

Next, configure

Enter OK and it will be configured automatically according to the following settings

(sudo / usr/local/sbin/EFA-Configure)

Choose option 14) Update Now (update to the latest system EFA-3.0.2.6)

After building the system, you need to follow the normal initial configuration.

EFA configuration option 8) Mail Settings-> option 1) outbound Mail Relay

EFA configuration option 8 "outbound Smart Host" (8P2) "Smart Host: disabled" because you want EFA to send mail directly

EFA configuration option 8 "transfer Settings" (8p4) as "domain.com"