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Why does the CNAME record continue to fail?
Why does the CNAME record continue to fail?
Fran Robles avatar
Written by Fran Robles
Updated over a year ago

Answer:

  1. CNAME Flattening
    Some DNS providers have a limitation in that they cannot handle multiple CNAME records for the same domain. This can cause issues when trying to map a domain to another domain that already has a CNAME record set up.
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  2. CNAME Loop
    A CNAME loop occurs when a CNAME record points to another CNAME record in a continuous chain. This will result in an error as the system is unable to resolve the final destination.
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  3. Time-to-Live (TTL) Conflicts

    CNAME records have their own TTL values, and these values can conflict with the TTL values of other records in the domain, causing issues with caching and resolution.
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  4. Misconfigured CNAME

    If a CNAME is set up incorrectly, it can lead to resolution errors or incorrect mapping to the intended target.
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  5. SSL/TLS Certificate Issues

    Using a CNAME record for a secure website can cause issues with SSL/TLS certificates, as the certificate is issued for a specific domain name, not an alias.

NOTE: It is important to consider these potential issues when setting up a CNAME record and to carefully plan and test the configuration before deployment.

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