problems changing NS records

Lucio Crusca lucio.crusca at
Thu Apr 26 13:18:01 UTC 2018

Until a few hours ago, I had several domains and 3 nameservers for them: (master, (slave, (slave,

Then I tried to migrate to a new master, (
Here is the migration steps I followed:

1) I configured Bind on the new server as master for all domains
2) I added the master IP address to the two slaves with:

masters vbitdnsmasters {;; };

zone "" {
        type slave;
        masters { vbitdnsmasters; };
        file "/var/lib/bind/";

and so on for all other zones.

3) I updated the NS records in the zone files, and in the control panel of
the domain registrar

Now all the domains have problems. IntoDNS reports:

Nameservers A records    ERROR: Some of your DNS servers do not have A
records at all. I could not find any A records for the following DNS

You must have A records for all of your nameservers.


dig @ -t ns
dig @
dig @
dig @ -t mx

all work as expected. Meanwhile, the same queries against sometime
work, sometime reply SERVFAIL.

I don't know what I did wrong. Please help.
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