I use Mailchimp as my email client and for deliverability, I need to Set Up Custom Domain Authentication: DKIM and SPF.
It requires creating a CNAME record and a TXT that look like this:
Create a CNAME record for k1._domainkey.yoursite.com with this value: dkim.mcsv.net .
Create a TXT record for yoursite.com with this value: v=spf1 include:servers.mcsv.net ?all
The problem is the system doesn’t seem to allow underscores. Does anyone know how to do this?