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serge1peshcoff
Asked: 2017-02-23 16:40:56 +0800 CST

Adding both CNAME and TXT DNS records for one subdomain

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I have a Heroku app and I need to set up a domain for it. The common way to set it up is to use CNAME record to specify that this domain is an alias to <your-domain-name>.herokuapp.com. The thing is, I also want to add Google Webmasters and Yandex.Metrika integrations and the easiest way is to add two TXT record for the domain. I set it up like that:enter image description here I need to have 2 TXT records on http://www.cscombo.com, but apparently this won't work because of this: https://stackoverflow.com/questions/34613083/cname-and-txt-record-for-same-subdomain-not-working

My current setup isn't working properly, because adding http://www.cscombo.com to the Google Webmasters wouldn't work (because TXT record for the www subdomain doesn't exist), and adding http://cscombo.com (non-www version) will work (the TXT record for this subdomain exists), but this way Google Webmasters won't be able to read both sitemap.txt and robots.txt (because they both redirect to the www version of the site). The same story with Yandex.Metrika.

So, the question: is there any way to add CNAME and TXT records for the same subdomain?

domain-name-system cname-record txt-record

2 Answers

  1. Best Answer

    You can't. As RFC1034 says in s3.6.2,

    If a CNAME RR is present at a node, no other data should be present

    If you want a TXT record for (say) www.example.com, you can't have a CNAME for www.example.com, and will have to find another way to achieve what you want. This may mean monitoring example.herokuapp.com yourself, and when the IP address changes, updating your own A records for www.example.com.

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  2. A workaround would be to use an ALIAS record if your registrar supports it. It is a type of records that provides CNAME-like behavior on apex domains. Read more: https://support.dnsimple.com/articles/alias-record/#whats-an-alias-record

    For example, you could create an ALIAS record for @ which points to myapp.herokuapp.com. This would allow you to also have TXT records for @ on the same domain name.

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