Hello,
have you seen this:
http://www.ibm.com/developerworks/lotus/library/domino7-mail-policy/>>Message Disclaimers tab
In Lotus Notes/Domino 7, you now have the ability to add message disclaimers using policies. Messages can be added by the server or by the client at the end or the beginning of outgoing SMTP messages. One common use of a message disclaimer is to display legal information about the company and/or a particular department in the company. You can enable or disable a message disclaimer from the Domino server or the Notes client. Using a combination of policies and policy settings, you can set different message disclaimers for various groups of executives.
regards
bytes