All Email Security Gateway models 300 and above in use with Lotus Notes / Domino, all firmware versions.
Barracuda Networks provides a mail client plugin for Lotus Notes versions 6.5, 7.0, 8.0. and 8.5. The plugin is available in a modified Lotus Notes mail template, and installing it involves replacing the design of the default Lotus Notes template with the Barradcuda mail template. If you have customized your Lotus Notes mail template and you want to add the Email Security Gateway's plugin to your existing template, Barracuda Networks also provides instructions on adding the necessary plugin design elements to any mail template.
To download these instructions and templates, navigate to the Basic > Bayesian Intent page of the Email Security Gateway's web interface, and click the Lotus Notes Plugin (Download/Install) link under the Mail Client Plugins heading.
Alternatively you can download them via