DDNS Failed

[Jim Reid]

>>>>> "Norman" == Norman Zhang <norman.zhang at rd.arkonnetworks.com> writes:

    Norman> I managed to solve this. The failure was due to
    Norman> CNAME. BIND's A record was www, and I used ns as a CNAME
    Norman> of www. Nothing wrong with ISC's DHCP and BIND's DDNS, but
    Norman> MS AD check couldn't resolve CNAME during installation.
    Norman> So my workaround is to make ns as A record,

This isn't a workaround. It's the way your zone should have been set
up from the outset. The target of an NS record MUST be a hostname: ie
a name that exists as either an A or AAAA record (or both). It MUST
NOT be a CNAME.