Symptoms
DNS records propagate to name servers with a significant delay or do not propagate at all.
Cause
Refresh time in SOA record is set to a very high value.
Resolution
For a single domain, go Top > Service Director > Domain Manager > Domains > domain.tld, click on the SOA record and decrease the Refresh value. To change default Refresh value, go Top > Service Director > Domain Manager > Setup > SOA defaults tab.
Please feel free to address OBAS Provider's Guide should you need any assistance.
See also
DNS zones are not synced to OBAS-managed name servers