I've experimented a bit with setting up a filter in Kmail that executes a script which calls the f-prot virus scanner. The script launches the xmessage program and pops up a window with sender and subject info displayed as well as the virus information, if f-prot returns an exit code indicating a virus was found attached to a message. While this seems to work well I'm wanting to take it a step further and ideally have a message containing a virus be moved to a different folder. What I'm trying to find is a way to modify the header data of a message to add a 'virus found' field or the like, similar to the X-Spam field that spamassassin adds to a spam laden message. Is there a recommended way to have an external program modify the message header so that the modification is included in the message when control returns to Kmail? With a 'virus' field set upon return a second filter could then move the message to another folder, again similar to the spamassassin scheme.
