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Server Setup Guides

Configure OpenSMTPD on Arch Linux

Configure OpenSMTPD on Arch Linux

Install

# OpenBSD – built-in:
rcctl enable smtpd && rcctl start smtpd

# Other platforms:
# Ubuntu/Debian:
apt install opensmtpd
# AlmaLinux/RHEL:
dnf install opensmtpd
# Arch:
pacman -S opensmtpd

Basic /etc/mail/smtpd.conf

pki mail.example.com cert "/etc/s...
7th May 2026

Configure OpenSMTPD on Debian 12

Configure OpenSMTPD on Debian 12

Install

# OpenBSD – built-in:
rcctl enable smtpd && rcctl start smtpd

# Other platforms:
# Ubuntu/Debian:
apt install opensmtpd
# AlmaLinux/RHEL:
dnf install opensmtpd
# Arch:
pacman -S opensmtpd

Basic /etc/mail/smtpd.conf

pki mail.example.com cert "/etc/ss...
7th May 2026

Configure OpenSMTPD on NetBSD 10

Configure OpenSMTPD on NetBSD 10

Install

# OpenBSD – built-in:
rcctl enable smtpd && rcctl start smtpd

# Other platforms:
# Ubuntu/Debian:
apt install opensmtpd
# AlmaLinux/RHEL:
dnf install opensmtpd
# Arch:
pacman -S opensmtpd

Basic /etc/mail/smtpd.conf

pki mail.example.com cert "/etc/ss...
7th May 2026

Configure OpenSMTPD on RHEL 9

Configure OpenSMTPD on RHEL 9

Install

# OpenBSD – built-in:
rcctl enable smtpd && rcctl start smtpd

# Other platforms:
# Ubuntu/Debian:
apt install opensmtpd
# AlmaLinux/RHEL:
dnf install opensmtpd
# Arch:
pacman -S opensmtpd

Basic /etc/mail/smtpd.conf

pki mail.example.com cert "/etc/ssl/m...
7th May 2026