lst_ho...@kwsoft.de wrote:
Have a look for PGP or S/MIME. This is client side encryption and must therefore configured in the client settings, not postfix.
You can use a S/MIME gateway like Djigzo open source email encryption gateway (www.djigzo.com) to encrypt all your incoming email with a certificate for each user. The recipients need the private key to read any email delivered to their inbox.
Martijn Brinkers -- Djigzo open source email encryption gateway www.djigzo.com
