Configure CNAMEs for SendGrid, how to?

Posted January 24, 2016 29.7k views
Linux BasicsUbuntuEmailConfiguration Management

Hello, I’m almost a complete noob at this.

I followd Discrouse’s install instructions and created an account on SendGrid to serve as a mail server for Discourse. However, I seem to cannot validate the domain (whitelabeling) that I added on the SendGrid account. It seems that I don’t know how to add the CNAME records for my droplet’s domain, because I’m getting the following message:

Error validating domain:
Expected CNAME for “” to match “”.
Expected CNAME for “” to match “”.
Expected CNAME for “s2.” to match “”.

I hope it’s still propagating.

Can somebody help, please? :D


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3 answers


In your do admin panel go to Network > Domains >

Then, create the following cnames:

Source Target

Notice two things:

  1. In the source don’t put the whole domain aka; just the subdomain aka mail
  2. In the target append a dot

SendGrid shows you something like

in DigitalOcean when adding a CNAME.. drop the from the first value

so enter

s1.domainkey -> s1.domainkey.u....

when you see the setup after saving.. you will see something like 1800 IN CNAME

or something.. then validation should happen fairly quick

Hey there,

Thank you for reaching out to us!

You’d want to add the CNAME records here.

If you have a problem with adding the CNAME records or would like support to double check the records for you, reach out to us with a support ticket.

Happy coding,

Jon Schwenn
Platform Support Specialist