thank you for your answer and the resources looks interesting. however my issue is that i cannot control dispatch dynamically with exim. so i am thinking of using powermta advanced control for dispatching emails to send through this external smtp server.
Installing & configuring PowerMTA could be a daunting task for beginners. However, if you are in digital marketing especially email marketing you would be tempted to try PowerMTA once in a life. Therefore, I have came up with the simplest way to install PowerMTA step by step on CentOS 7/8.
First of all, PowerMTA can be installed standalone as well as along with some control panels like VestaCP, CyberPanel, cPanel, Virtualmin/Webmin, CentOS Web Panel, Froxlor, etc. In another article, I already have discussed the installation of VestaCP. If you want to install PowerMTA on VestaCP you can follow it.
can you please help me about that error
PowerMTA5.rpm is for architecture amd64 ; the package cannot be built on this system
im trying to install it on oracle instance with
Canonical-Ubuntu-20.04-aarch64-2022.08.15
can you please suggest any version of powermta working great with that version of ubunto or any help please