I am interested to find out when sending S/MIME if my device does the look up on the recipients key information using the USERCERTIFICATE and/or USERSMIMECERTIFICATE attribute in AD. We are synching contacts from 2 different forests and prefer to use the USERCERTIFICATE which we will replicate between forests. Any pointers to documentation detailing which attributes are used would be great as well.

Thanks!
LC