also-notify and nsupdate doesnt work

[jonny at hasig.de]

hi,

 > Apologies if this has already been asked, but are you sending these 
NOTIFYs from a master which is _not_ in the "masters" clause of the 
nameserver which is receiving it? That's precisely the use case for 
"allow-notify"...

the notifies are sent by the only master, which is noted in the soa, has 
an ns entry and is surely present in the "masters" acl of all the slaves.

jonny