Install iRedMail on Debian or Ubuntu

https://docs.iredmail.org/install.iredmail.on.debian.ubuntu.html

• hostnamectl set-hostname mail.internal.YOUR_DOMAIN.COM
• vi /etc/hosts

127.0.0.1   mail.internal.YOUR_DOMAIN.com mail.internal mail localhost localhost.localdomain

• wget https://github.com/iredmail/iRedMail/archive/1.1.tar.gz

Related commands

• hostname -f
• hostnamectl

See also

• Mail, SMTP, submission, SMTPS, POP, IMAP, StartTLS, Exim, Postfix, IRedMail, Fail2ban, Dovecot, Roundcube, DKIM, SPF, DMARC, MX, ssmtp, mailx, Swaks