Automatic encryption of outgoing emails with S/MIME
iQ.Suite Tips & Tricks for IBM Domino
If required, all the emails destined for the Internet can be
automatically encrypted, provided the recipient has a public S/Mime
certificate. The way to do this is to set up a group which lists all the
email recipients with a public certificate.
The alternative option is to query the certificate database, as described here:
Step by step:
iQ.Suite Address Rule

The certificate database (default is g_cert.nsf in the iQ.Suite data directory)
The information must be entered relative to the Domino data directory.
The view "CertificatesInternetadress" contains all the active S/Mime
certificates sorted by Internet address.
Crypt Mail Job

Select the rule created above (you can add your own rules if you need to).

If you want the email to be sent even if the active public
certificate does not have "Trusted" status, you need to deactivate the
following fields:
On Error – Stop Mail
On Error – Notify Sender
Also, the "Subject upon success" field should be EMPTY, so that the
recipient does not incorrectly receive the message that the email has
been encrypted.
From now on, all the emails sent to recipients with an active S/Mime certificate will be encrypted.
Note: As already mentioned, all the active S/Mime certificates are used, irrespective of other statuses or validity.