Mailserver-Best-Practice

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Prepare Maildirs

  • mkdir -p /etc/skel/Maildir/new
  • mkdir -p /etc/skel/Maildir/cur
  • mkdir -p /etc/skel/Maildir/tmp

Install Postfix

  • apt-get install postfix

Install Procmail

  • apt-get install procmail

Postfix Service Handling

  • systemctl start postfix.service
  • systemctl restart postfix.service
  • systemctl stop postfix.service
  • systemctl status postfix.service

Config of Postfix

  • /etc/postfix/master.cf
  • /etc/postfix/main.cf

SSL Verschlüsselung

Install letsencrypt

  • sudo apt install letsencrypt
  • letsencrypt certonly --standalone -d yyyy.tuxmen.de

master.cf changed

smtps     inet  n       -       y       -       -       smtpd
  -o smtpd_tls_wrappermode=yes
  -o smtpd_sasl_auth_enable=yes
  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject

Install and config sasl

  • apt-get install sasl2-bin