You would all have to agree on a common encryption method (e.g., pgp, gpg,
etc.) for each list and each use it to encrypt and decrypt your messages.
Listserv doesn't not do that natively as far as I know.

On 12/1/2010 3:35 PM, "Kern, Thomas" <[log in to unmask]> wrote:

>Is there any capability in the current Listserv product to encrypt each
>posting for each recipient? We have customers who use three different
>encryption mechanisms, pgp, gpg and a purchased product called Entrust.
>
>--
>Thomas Kern
>Energy Enterprise Solutions, LLC
>Contractor to the
>United States Department of Energy
>1000 Independence Avenue, SW
>Washington, DC 20585
>Phone: 301-903-2211 (Office)
>Phone: 301-905-6427 (Mobile)
>Email: [log in to unmask]