rmail.sendmail
powerful, efficient, and scalable Mail Transport Agent (metapackage)
RUN apt-get update && \
apt-get install -y sendmail
RUN apt-get update && \
apt-get install -y sendmail
RUN apt-get update && \
apt-get install -y sendmail
RUN yum install -y sendmail
RUN dnf install -y sendmail
RUN apt-get update && \
apt-get install -y sendmail