Milestones

1. Setup Mail Server

• Install linux server (Ubuntu 20.04)
• Setup DNS

/etc/ddclient.conf

ssl=yes
protocol=namecheap
use=web, web=dynamicdns.park-your-domain.com/getip
server=dynamicdns.park-your-domain.com
login=fakemail.stream
password='[redacted]'
s1

/etc/default/ddclient

run_dhclient="false"
run_ipup="true"
run_daemon="true"
daemon_interval="120"

systemctl enable ddclient.service

• Investigate and choose SMTP server.
  • qmail - poor documentation? Complicated.
  • opensmptd - has a recent RCE. Complicated.
  • postfix - ubuntu default.
  • subethasmtp (Java) - no recent dev activity
  • smtpserver (.Net) https://github.com/cosullivan/SmtpServer. Simple and configurable.
• Install and configure SMTP server
  • old messages are deleted based on time/free memory/disk space
  • drop attachments and truncate messages
  • no outgoing connections

2. Configure SSL (LetsEncrypt)