Rhyolite Software, LLC

Mount Rhyolite

Custom programming and software consulting

Some miscellaneous free source is available
as well as some anti-spam files including the primary source of the DCC spam filter.

You can download the Rhyolite Software self-signed certificate into some browsers.
It is also available in PEM format for use with SMTP clients and servers that understand STARTTLS.

Contact Vernon Schryver at vjs@rhyolite.com.
Mail messages from unwelcome domain names or a few free providers may appear to be accepted by the Rhyolite Software mail system, but are generally reported to DCC. Users at those IP addresses or domain names should use the web form.