What is kmail looking for?

[Robin Lynn Frank]

Sorry for the slightly OT post, but when kmail encounters mail where it is 
signed in an attachement rather than inline, it disolays this.  What is it 
looking for?

Message was signed with unknown key.
The validity of the signature cannot be verified.
Problem: OpenPGP plug-in was not specified.
Use the 'Settings->Configure KMail->Security' dialog to specify the plug-in or 
ask your system administrator to do that for you.
-- 
Robin Lynn Frank
Director of Operations
Paradigm-Omega, LLC
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