Install rspamd stable - Ubuntu/Debian

install-rspamd-stable.sh

#!/bin/bash
# See https://rspamd.com/downloads.html

apt update
apt install -y sudo lsb-release wget gpg

CODENAME=$(lsb_release -c -s)
if [ $CODENAME = "trixie" ]; then
    CODENAME="bookworm"
fi

wget -O- https://rspamd.com/apt-stable/gpg.key | gpg --dearmor >/etc/apt/trusted.gpg.d/rspamd.gpg

cat <<EOF > /etc/apt/sources.list.d/rspamd.list
deb [arch=amd64] http://rspamd.com/apt-stable/ $CODENAME main
deb-src [arch=amd64] http://rspamd.com/apt-stable/ $CODENAME main
EOF

sudo apt-get update
sudo apt-get --no-install-recommends install rspamd