The disclaimer text that was set up for Symantec Mail Security for Domino (SMSDOM) is not added to outbound messages.
To fix this problem, change the settings in the Location document for Lotus Notes to send email in Rich Text Format (RTF). This is a change from the default Multipurpose Internet Mail Extensions (MIME) setting.
The following section is a copy of content found in the Readme.txt file for Symantec Mail Security for Domino:
Configuring the Notes client to function with the SMSDOM disclaimer feature
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To ensure that the SMSDOM disclaimer feature functions properly, set the following options:
A disclaimer will not be added to email messages within the same Domino mail domain. Disclaimers with same disclaimer mark will be only applied to an email once.