Install rspamd stable - Debian

install-rspamd-stable.sh

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

apt update
apt-get install sudo
sudo apt-get install -y lsb-release wget gpg
CODENAME=`lsb_release -c -s`
if [ $CODENAME = "trixie" ]; then
CODENAME="bookworm"
fi
sudo mkdir -p /etc/apt/keyrings
wget -O- https://rspamd.com/apt-stable/gpg.key | gpg --dearmor | sudo tee /etc/apt/keyrings/rspamd.gpg > /dev/null
echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/rspamd.gpg] http://rspamd.com/apt-stable/ $CODENAME main" | sudo tee /etc/apt/sources.list.d/rspamd.list
echo "deb-src [arch=amd64 signed-by=/etc/apt/keyrings/rspamd.gpg] http://rspamd.com/apt-stable/ $CODENAME main"  | sudo tee -a /etc/apt/sources.list.d/rspamd.list
sudo apt-get update
sudo apt-get --no-install-recommends install rspamd

good job