There are hundreds of machines littered around the net that dont bother adding "received" headers to mail.
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Another possibility is that rather than operating remailers at all, maybe we should be operating non-logging smtp hosts that dont add received headers. Building a client to take advantage of these servers would be trivial (i wrote one last night, and i am not proficient in C) and it could be argued that the situation was not created intentionally to allow anonymous messages, merely to preserve disk space and bandwidth.
You really don't even need a client. RFC822 defines a method for bouncing mail through another server. Just use "user%final.dest.com@laxly.configured.org" as the address and laxly.configured.org will send it on to user@final.dest.com. Wonder what would happened if the sendmail in the (Linux|NetBSD|your favourite i386 UNIX) distributions came cofigured to not add Received: headers by default . . . . Probably would make diagnosing bounces hell, but it would make a lot of remailer-chain tail ends. Anyone tried out whitehouse.gov to see if it's adding Received:'s or not yet? :) --- Fletch __`'/| fletch@ain.bls.com "Lisa, in this house we obey the \ o.O' ______ 404 713-0414(w) Laws of Thermodynamics!" H. Simpson =(___)= -| Ack. | 404 315-7264(h) PGP Print: 8D8736A8FC59B2E6 8E675B341E378E43 U ------