CNAME records and Heroku domains

Question

This is my first time setting up custom domains, DNS and SSL and I am thoroughly confused. I have a heroku app running on sagerenewables.heroku.com with an SSL endpoint at okinawa-64385.herokussl.com

My custom domain is {www.}sagedataportal.com and both are linked to okinawa-64385.herokussl.com in Heroku.

I have 3 CNAME Records(in Namecheap):

www -> parkingpage.namecheap.com
www -> okinawa-64385.herokussl.com
www.sagedataportal.com -> okinawa-64385.herokussl.com

as well as 3 redirect domains:

sagedataportal.com -> http://www.sagedataportal.com/
sagedataportal.com -> http://sagerenewables.herokuapp.com
sagedataportal.com -> http://okinawa-64385.herokussl.com/

Clearly I'm doing something wrong but I don't know what. How are the CNN records supposed to look like? What about the heroku redirect URLs?

Simone Carletti Simone Carletti · Accepted Answer · 2016-06-24T18:08:40

In order to map www.sagedataportal.com to the Heroku SSL endpoint you only need 1 CNAME:

CNAME www okinawa-64385.herokussl.com

Assuming your current DNS provider appends automatically the zone name after the www prefix. Remove all the other CNAMEs.

As for the root domain (sagedataportal.com) the only way to map it to Heroku with SSL is by using a provider that supports the ALIAS feature.

See https://devcenter.heroku.com/articles/apex-domains and https://devcenter.heroku.com/articles/custom-domains#add-a-custom-root-domain. NameCheap currently doesn't support that feature hence you will not be able to use your SSL certificate with Heroku under the root domain.

CNAME records and Heroku domains

1 Answers