I need to add a SendGrid SPF record for my GoDaddy domain, but I'm not sure exactly where to put it. I have an existing TXT record for @ with value of google-site-verification=XXXXXXXXXXXXXXXXXXXXXXXX. So should I add the SPF information to that, or create a new TXT record? If I need to add it how should I do so - append it after a semicolon?
You should create a new TXT record with the spf information in there. If you want an example, we had to do the same at work:
$ dig -t txt booking.com booking.com. 900 IN TXT "v=spf1 mx/25 ip4:184.108.40.206/28 include:priceline.com include:sendgrid.net ?all" booking.com. 900 IN TXT "google-site-verification=RUz0C9k4tXs5skeRZsP5FGjiyGXptvWtg7YPC49bMQI"