Hi all, We are hardening our services and would like to run postfix as a non-root user. All our primary services, including postfix run as docker containers. We use postfix as a forwarding agent only: mail is delivered from the other services to postfix and then forwarded to another MTA. Because postfix runs inside a docker container, we are not bound by the default smtp port. It is very easy to map port for example 8025 to port 25 via docker. Still, postfix refuses to start as non-root. It seems the postfix command has an explicit check to refuse to start when not root.
My question is: is there any way to start the forwarding agent as non-root? If not, are there any plans to support this in a future release? Best regards, Emond Papegaaij
