We had some concerns here a while back that someone was trying to exploit such a feature to create an exponentially-growing message that would totally overload the remailers. A message of the form:

:: Request-Remailing-To: <list of remailers here>

:: Request-Remailing-To: <list of remailers here>

<repeat about 20 times>

was sent. If all remailers had observed and honored the multiple requests, there would have been uncounted trillions of messages flying about. So I would caution anyone considering implementing this feature.

Hal

Was this Detweiller's "exponentially growing message"? Note that requiring pgp wrappers kills this... Nathan