Question

Configure CNAMEs for SendGrid, how to?

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 “mail.medaddon.com” to match “u2210027.wl.sendgrid.net”. Expected CNAME for “s1._domainkey.medaddon.com” to match “s1.domainkey.u2210027.wl.sendgrid.net”. Expected CNAME for “s2._domainkey.medaddon.com” to match “s2.domainkey.u2210027.wl.sendgrid.net”.

I hope it’s still propagating.

Can somebody help, please? :D

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You need to put a dot in the end of alias.

Example:

s1.domainkey -> s1.domainkey.u2210027.wl.sendgrid.net. < it’s necessary this last dot

Bye!

I think this is outdated. DigitalOcean interface adds domain name to subdomain and it removes the dot at the end of the sendgrid.net

hey :) did it work for you ?


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Accepted Answer

Hi!

In your do admin panel go to Network > Domains > yourdomain.com

Then, create the following cnames:

Source Target
mail u2210027.wl.sendgrid.net.
s1.domainkey s1.domainkey.u2210027.wl.sendgrid.net.
s2.domainkey s2.domainkey.u2210027.wl.sendgrid.net

Notice two things:

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

SendGrid shows you something like

s1.domainkey.yourdomain.com s1.domainkey.u1XXXXXX.wXXXX.sendgrid.net

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

so enter

s1.domainkey -> s1.domainkey.u…

when you see the setup after saving… you will see something like

s2._domainkey.yourdomain.com. 1800 IN CNAME s2.domainkey.u1XXXXXX.wXXXX.sendgrid.net.

or something… then validation should happen fairly quick

SendGrid shows you something like

s1.domainkey.yourdomain.com s1.domainkey.u1XXXXXX.wXXXX.sendgrid.net

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

so enter

s1.domainkey -> s1.domainkey.u…

when you see the setup after saving… you will see something like

s2._domainkey.yourdomain.com. 1800 IN CNAME s2.domainkey.u1XXXXXX.wXXXX.sendgrid.net.

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 DigitalOcean