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Troubleshoot abnormal access after CNAME resolution by Alibaba Cloud CDN

Last Updated: May 16, 2017
Problem:

When Alibaba Cloud CDN is used, after the first-level domain name test.com and second-level domain name www.test.com are resolved, test.com can be accessed whereas www.test.com cannot be accessed. Both domains can be accessed after they are bound to the origin site.

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Analysis:

The resolution results show that the two domain names are resolved to the same CNAME: test.com.w.alikunlun.com.

Each CNAME maps a domain name, which must not be resolved to other CNAMEs.

Solution:

Resolve the CNAME of the second-level domain www.test.com to www.test.com.w.alikunlun.com. Then the domain will be accessible.

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If the problem persists, contact Alibaba Cloud After-Sales Technical Support.

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