6525DNSA zone transfer request for the secondary zone somedomain.local was refused by the master DNS server at 1.2.3.4. Check the zone at the master server 1.2.3.4 to verify that zone transfer is enabled to this server. To do so, use the DNS console, and select master server 1.2.3.4 as the applicable server, then in secondary zone somedomain.local Properties, view the settings on the Zone Transfers tab. Based on the settings you choose, make any configuration adjustments there (or possibly in the Name Servers tab) so that a zone transfer can be made to this server.
A zone transfer was not allowed by the server holding the master DNS records for the domain. You will need to authorize the DNS server that wants a secondary copy on the master server.
The instructions in the event log details should explain how to do this.