FAQ? how to set up a cross-platform encrypted mailing list/forum

[David Honig]

At 12:11 AM 2/21/01 -0600, Jim Choate wrote:
>
>On Tue, 20 Feb 2001, Joseph Ashwood wrote:
>
>> So you write it so that unencrypted e-mail simply will be bounced. Simple
>> enough to do.
>
>Really? Provide a reference to such an algorithm? Determining if a

1. look for appropriate headers
and/or
2. convert to binary and measure the entropy of the sample.  Nothing written
by human hand comes close to pure noise.

This counters trivial spam and would prevent unintentional cleartext
transmissions.
Are we assuming that participants have some interest in keeping the threads
confidential?
Or some of them malicious?