# Cyren IP Reputation > Cyren IP Reputation 4.5-stable documentation ## Pages - [Cyren IP Reputation](index.html.md): This is the documentation for the Cyren IP Reputation add-on option. - [Installation](install.html.md): Make sure you have followed the instructions in our manual to add our package repository. - [Upgrade](upgrade.html.md): In order to upgrade the package, install the new package over the previous installed one (see the installation chapter). - [Configuration](config.html.md): ctipd loads the non-reloadable configuration from /etc/ctipd/ctipd.conf. - [Integration](integration.html.md): In order to integrate this program with our MTA, see our client library here. ## Optional - [llms-full.txt](llms-full.txt): Complete documentation in a single file.