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An email with an document attachment from a know person is received with a digital signature. The email client is unable to validate the signature. What are the best options
Open the attachment to see if the signature is valid
Delete email
Determine why the signature cant be validated prior to opening
Forward e-mail to another address with a new signature
If a digital signature cannot be validated there must be a reason. The system may not have reached the CA. The Certificate used to sign the document may have self generated. Therefore determine why first before opening
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