error using nsd

[Levente Farkas]

hi,
try to switch to nsd from bind, but i've got a lot's of such error in
the slave server's log files:
-----------------------------------------------
Dec  6 19:12:11 ns2 nsd[16026]: xfrd: zone lfarkas.org received error
code NOT IMPL from 212.92.23.223
-----------------------------------------------
while this is the master file on the master server:
-----------------------------------------------
$TTL 2D
@       1H      SOA     ns.lfarkas.org. hostmaster.lfarkas.org. (
                        2006112301      ; serial
                        12H             ; refresh
                        2H              ; retry
                        4W              ; expire
                        1H)             ; minimum
                NS              ns.lfarkas.org.
                NS              ns2.name-server.hu.
;               NS              ns3.name-server.hu.
                NS              ns.deninet.hu.
                NS              ns.banknet.net.
                NS              ns2.banknet.net.
                MX      10      mx1.mail-server.hu.
                MX      20      mx2.mail-server.hu.
$ORIGIN lfarkas.org.
                A               212.92.23.223
                TXT             "v=spf1 mx -all"
                TXT             "spf2.0/pra mx -all"
ns              A               212.92.23.223
www             A               212.92.23.223
-----------------------------------------------
what can be the problem?
thanks.

-- 
  Levente                               "Si vis pacem para bellum!"