First published on IBM developerWorks.
The "Mark unsigned mail with attachment" agent automatically checks for unsigned mail carrying an attachment. Because more and more mail messages are sent using an unknown or even a fake user ID, this agent can add one more level of security to help your organization prevent the spreading of worms and viruses.
In your Inbox, mail messages that have one or more attachments but don't have a digital signature will look like the fourth mail message (from the top) in the following screen. (Notice the bomb icon instead of the paper clip.)
Figure 1. Mail message with attachment marked as unsigned
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Note: The bomb icon in the Subject column does not necessarily indicate a virus; it only indicates that the mail message contains an attachment, but has no digital signature. The other messages shown in the previous screen may or may not be signed. The "Mark unsigned mail with attachment" agent ru
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ns only on those messages that contain attachments. You can modify this agent to run on all mail messages if you prefer.
Creating the "Mark unsigned mail with attachment" agent
If you have the Mark incoming mail agent...
If you have already installed an agent for distinguishing incoming mail by To: and cc: (see the tip, Mark incoming mail for more information), add the following code rather than the code shown in the previous section:
Customization
If you prefer another icon to the bomb, use a number other than 91 in the second line of the preceding code:
For example, if you use 92 instead, you will get a stop sign icon as shown in figure 2. See the topic, "Displaying an icon in a column" in the Domino Designer help for a list of column icons that you can use.
Figure 2. Stop sign icon
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For more information about Notes mail, see the following:
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