This message has been digitally signed by the sender. Signed e-mail from others allows you to verify the authenticity of ...

This message has been digitally signed by the sender. 

Signed e-mail from others allows you to verify the authenticity of a message -- that the message is from the supposed sender and that it has not been tampered with during transit. Signed mail messages are designated with the signed mail icon.

Any problems with a signed message will be described in a Security Warning which may follow this one. If there are problems, you should consider that the message was tampered with or was not from the supposed sender.
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