Can one have multiple name servers that don't all belong to the same TLD/provider?

Posted by Simon on Server Fault See other posts from Server Fault or by Simon
Published on 2012-09-11T23:26:24Z Indexed on 2012/09/12 3:40 UTC
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In light of the GoDaddy outage we updated our name server list for our domain to include an additional name server provider. The list looks something like this:

  1. ns61.domaincontrol.com
  2. ns54.domaincontrol.com
  3. ns1.dreamhost.com
  4. ns2.dreamhost.com

Both Godaddy and Dreamhost have zone entries to handle the A and MX records. The idea is that if one provider goes out the other will be a fall-back.

However, when I tested my config with http://www.intodns.com/ I am getting a warning about SOA serials not being agreed.

Have I misunderstood some fundamentals in name-server config? What can I do to prevent future problems?

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