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Howiecamp
Asked: 2015-09-22 12:06:09 +0800 CST

Azure blob storage custom domain verification - Azure telling me to create CNAME for non-existent address

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I want to assign a custom domain name to my Azure blob storage account. In the custom domain setup page it says:

You can map a custom subdomain name to your Blob service endpoint. Windows Azure must verify that you are authorized to modify DNS records for the domain. To verify authorization, create a CNAME resource record with your DNS provider that points from [subdomain].yourdomain.com to justanotherxiodec11.blob.core.windows.net or asverify.[subdomain].yourdomain.com to asverify.justanotherxiodec11.blob.core.windows.net.

However, justanotherxiodec11.blob.core.windows.net doesn't resolve at all. Am I missing something? (Note: I expected to see *mystorageaccountname*.blob.core.windows.net, not justanotherxiodec11... I have no idea what justanotherxiodec11 is.)

ps Unrelated - are the IP addresses that are associated with the mystorageaccountname.blob.core.windows.net host names static or dynamic?

storage

1 Answers

  1. Best Answer

    It doesn't need to resolve to anything. Microsoft will check your domain's DNS for that record. If it exists, you've proved you at least have control of the domain's DNS records, and as such have proven enough control of the domain for Microsoft's comfort level.

    No one other than Microsoft's "does Howiecamp own example.com?" automated system will ever do anything with that subdomain.

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