Running Docker Mail Server - A Full Stack Email Solution - In Docker

#Docker #EmailServer #Linux #Email

Full steps can be found at https://i12bretro.github.io/tutorials/0779.html

What is Docker Mailserver?

[Docker Mailserver is a] production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.). Only configuration files, no SQL database. Keep it simple and versioned. Easy to deploy and upgrade. -  https://github.com/docker-mailserver/docker-mailserver

Installing Docker

   01. Log into the Linux host and run the following commands in a terminal window          # update software repositories          sudo apt update          # install prerequisites          sudo apt install apt-transport-https ca-certificates curl software-properties-common gnupg-agent -y          # add docker gpg key          curl -fsSL https://download.docker.com/linux/$(awk -F'=' '/^ID=/{ print $NF }' /etc/os-release)/gpg | sudo apt-key add -          # add docker software repository          sudo add-apt-repository "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/$(awk -F'=' '/^ID=/{ print $NF }' /etc/os-release) $(lsb_release -cs) stable"          # install docker          sudo apt install docker-ce docker-compose containerd.io -y          # enable and start docker service          sudo systemctl enable docker && sudo systemctl start docker          # add the current user to the docker group          sudo usermod -aG docker $USER          # reauthenticate for the new group membership to take effect          su - $USER

Running Docker Mailserver Container

   01. Continue with the following commands in a terminal window          # create main working directories          mkdir ~/docker/mailserver/{data,state,logs,config} -p          # set owner of working directories          sudo chown "$USER":"$USER" ~/docker -R          # run the mailserver container          docker run -d --name=mailserver --hostname="$HOSTNAME" --domainname="docker.local" -p 25:25 -p 143:143 -p 587:587 -p 993:993 -e ENABLE_SPAMASSASSIN=1 -e SPAMASSASSIN_SPAM_TO_INBOX=1 -e ENABLE_CLAMAV=1 -e ENABLE_POSTGREY=1 -e ENABLE_FAIL2BAN=0 -e ENABLE_SASLAUTHD=0 -e ONE_DIR=1 -e TZ=America/New_York -v ~/docker/mailserver/data/:/var/mail/ -v ~/docker/mailserver/state/:/var/mail-state/ -v ~/docker/mailserver/logs/:/var/log/mail/ -v ~/docker/mailserver/config/:/tmp/docker-mailserver/ --restart=unless-stopped mailserver/docker-mailserver          # create a user/inbox          docker run --rm -e MAIL_USER=i12bretro@docker.local -e MAIL_PASS=supersecret -it mailserver/docker-mailserver /bin/sh -c 'echo "$MAIL_USER|$(doveadm pw -s SHA512-CRYPT -u $MAIL_USER -p $MAIL_PASS)"' ≫≫ ~/docker/mailserver/config/postfix-accounts.cf

Setting Up An E-Mail Client

   01. Download Mozilla Thunderbird Portable  https://portableapps.com/apps/internet/thunderbird_portable    02. Run the downloaded paf.exe file and extract it to any location    03. Check the Run box and click Finish    04. Fill out Your name, Email address and Password for the account created earlier    05. Click Manual config    06. For Incoming, enter the DNS name or IP address of the docker host    07. For Outgoing, enter the DNS name or IP address of the docker host    08. Click the Re-test button, Thunderbird should set some additional values    09. Click Done    10. Select I understand the risks ≫ Done    11. From within Thunderbird, compose a new email address and send it to the inbox created earlier to test internal emails are working   Documentation:  https://docker-mailserver.github.io/docker-mailserver/edge/  

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