mailq
extremely simple MTA to get mail off the system to a mail hub
RUN apt-get update && \
apt-get install -y masqmail
RUN apt-get update && \
apt-get install -y masqmail
RUN pacman -S --noconfirm esmtp
RUN apt-get update && \
apt-get install -y dma
RUN dnf install -y postfix-2
RUN apt-get update && \
apt-get install -y masqmail