Zone master is not Authoritative.

[Stephen Carville]

Any idea what is causing this error message.  It look like my zone
master no longer thinks it is authoritative.

Jun 19 08:51:03 ops named[27715]: unapproved AXFR from
[134.244.128.34].3096 for "ugsolutions.com" (not authoritative) 

134.244.128.34 is a slave server for the zone and the server this
message is appearing on (134.244.64.11) is master for the zone:

zone "ugsolutions.com" {
        type master;
        file "db.ugsolutions";
};
  
I currently allow transfers for any machine in the 134.244/16 address
space.

options {
        directory "/var/named";
        allow-transfer { 134.244/16; };
};