License query

[Paul Howarth]

I'm thinking of packaging perl-NTLM; it has the following license terms:

COPYRIGHT AND LICENCE

This application is free software.  This code is distributed in the hope 
that it will be useful, but WITHOUT ANY WARRANTY; without even the 
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
  You may freely use, copy and distribute this software as long as all 
copyright notices, including this notice, remain intact and that you do 
not try to claim it as your own or try to sell it.  You may alter the 
code as long as you send me any diffs (this will ensure that you have an 
easier time of it when you upgrade ;).




It looks quite free apart from the "as long as ... you do not ... try to 
sell it" clause, which I think disqualifies it as free software despite 
what the first sentence of the license terms states. Is this OK for 
Extras or not?

Paul.