On 30-11-18 13:09, Weppert Juergen via Users wrote:
how can i use S/Mime encryption/decryption with an
domain certificate but only with one external partner (other domain)?
Emails to other recipients must be encrypted with their personal S/Mime certificate.
I assume you are talking about using a domain certificate for the
external domain? (and not a domain certificate for signing).
If so, you need to add the external domain, then on the domain settings
select "S/MIME -> encryption certificates" and select the certificate
you want to use for that external domain.
CipherMail email encryption
Email encryption with support for S/MIME, OpenPGP, PDF encryption and
secure webmail pull.