I want to know how to install opendkim on AmazonLinux 2023

If you have internet connection, you can use the yum package manager to install the OpenDKIM source code using cURL.

sudo yum install openssl-devel libbsd-devel autoconf automake libtool
curl -O -L https://downloads.sourceforge.net/project/opendkim/opendkim-2.11.0.tar.gz
tar -xzvf opendkim-2.11.0.tar.gz

Install the application, configure settings, and then systemctl start opendkim once complete.