4.4 Zone transfers

MyDNS will allow zone transfers (via AXFR) if the configuration option `allow-axfr' is true. This is recommended only if you have an absolute need for DNS-based zone transfers, such as if your secondary name server is running BIND.

MyDNS does not support incremental zone transfers (IXFR).

If you need to support DNS-based zone transfers, you have to enable `allow-tcp'. (This is not true for BIND 9.)

You can specify IP access rules for DNS-based zone transfers by using an optional column called `xfer' in the soa table. See section 3.4.2 soa.xfer.