Got a suspicious email from "Adobe Portfolio". Is it phishing?

I've had my site up and running through Adobe Portfolio for three months now, without issue. I woke up this morning to the following email:

We've detected a possible issue with the DNS setting configurations for your custom domain name (with my domain name inserted here) on Adobe Portfolio. Please check and remedy by following the steps here.

If you no longer use Adobe Portfolio, you can disregard this email. To avoid receiving other warnings about this issue, please remove your custom domain name from within your Adobe Portfolio Editor > Settings > Domain Name.
- Adobe Portfolio Team
If you have any questions or concerns, please don’t hesitate to reach out to our support team here 

I logged onto my adobe profile and couldn't find any notifications in my main account or my portfolio account. Sounds like a phishing scam to me so I'd disregard, but I have an important conference coming up and need my website to work. I want to make sure I wont have any issues in the near future.

Any thoughts?