Barry Shein writes...
3. In order for an email message to pass over port 52 it must have a
header which reads:
X-SPAM-CHARTER: This message conforms to the SPAM Charter
or similar (X-PUCE-CHARTER:). Otherwise, it's just dropped on the
floor. Remember that this is the new port.
4. Abuse of that header is a litigable trademark violation (we get
this set up with lawyers, but akin to DC comics or the Good
You can trademark the use of a TCP port? Are you sure?
If so, what a keen idea this might be. Either that, or its really
scary. I'm not sure which.