User in a different domain is unable to send encrypted Exchange email
I can send encrypted Exchange Server email to a user who is in a different domain, but this user is unable to send me an encrypted email. Why?

Software/Hardware used:
ASKED: March 5, 2008  5:24 PM
UPDATED: March 10, 2008  7:50 AM

Answer Wiki:
It is possible that their outlook has not been properly configured to send encrypted e-mail, they do not have a user certificate configured and/or created, or that they do not trust or have a trusted CA in the domain where they are located.
Last Wiki Answer Submitted:  March 5, 2008  7:08 pm  by  Jerry Lees   5,320 pts.
All Answer Wiki Contributors:  Jerry Lees   5,320 pts.
To see all answers submitted to the Answer Wiki: View Answer History.


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are the two domains in the same forest? (windows active directory forest), or are they two separate companies?

 6,850 pts.

 

Yes, in order to send encrypted email, the remote user’s certificate needs to be installed or available so that you can encrypt the message using that certificate.
It sounds like you have their certificate, they don’t have yours.
Give us a little more information about your set up (as has been asked) and we’ll be able to help you better.

 90 pts.