Mailinabox hosting DNS - TTL

With Mailinabox configured to host DNS, what is the default TTL for each record?

30 minutes. My experience with DNS caching is that these TTLs are kind of a suggestion, though.

I deleted old cname record and added a new cname records over 6 hours ago and dig is still coming up as my original DNS record.

I went through and changed 1800 to 3600. What do I need to do to rebuild the zone files so they reflect the new TTL?

If there’s something magic at line 371 for TTL, I’m not seeing it.

Might be useful for other people:

You can update the write_nsd_zones function to include whatever TTL you’d like