Hi Tom,
>>Interestingly enough, I am able to receive encrypted emails but am unable to reply with an encrypted email to users with an IdenTrust PKI Cert within the company.
Can you send an encrypted email directly to the users?
When receiving encrypted emails, the email is encrypted using your public key, and you are using the your own private key to decrypt the message. However, when sending an encrypted email, you are using the recipient's public key to encrypt the message. If
you don't have the recipient's public key or the public key has expired, you will see this error message. You may ask one recipient to publish the correct certificate to GAL and then try sending an encrypted message to the recipient again to see the result.
Regards,
Steve Fan
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