why do I get "No response from server"

[Chris Thompson]

I am afraid that both my claims were wrong: 

  that the NS records in the zone were different from the ones
  at the delegation point (I had picked the wrong set of NS 
  records from the authority section of a reply)

  that mail1.ccs.bbk.ac.uk was not authoritative for lkl.ac.uk
  (its not authoritative for bbk.ac.uk which the CNAME points
  into, but so what)

That will teach me to post too fast (maybe). Apologies.

-- 
Chris Thompson
Email: cet1 at cam.ac.uk