dockerfile.run

rsmtp

lightweight Exim MTA (v4) daemon

Debian

RUN apt-get update && \
    apt-get install -y exim4-daemon-heavy

Ubuntu

RUN apt-get update && \
    apt-get install -y exim4-daemon-heavy

Alpine

RUN apk add exim

Arch Linux

RUN pacman -S --noconfirm exim

Kali Linux

RUN apt-get update && \
    apt-get install -y exim4-daemon-heavy

Fedora

RUN dnf install -y exim

Raspbian

RUN apt-get update && \
    apt-get install -y exim4-daemon-heavy

click the source code to copy install rsmtp on any operating system with command-not-found.com