Before any installation is attemped, you should consult your companies legal team for any pertinant information that should be included in the disclaimer. I have been reading case after case regarding the use of email as evidence. The New York Times fired 23 employees for the content they were sending via email. Dow Chemical fired 50 employees and suspended nearly 200 employees due to the content they were sending also. This is not a laughing matter.
Companies are at stake, so are the employees.
In order to protect the Company from any law suit regarding an email sent from their email server, a disclaimer should be inserted into the email. Prior to Imsext.dll, you had to either purchase a third party program, or you could add the disclaimer to the client. The only problem with adding it to the client, they can remove it at any time. The only problem with adding this extension, it is a company wide update. To implement the extension on your server, you will need to obtain a copy of Backoffice Resource Kit 4.5.