Failed SPF DMARC on high volume of emails

Each day I get a SPF fail for the same PTR coming from Google for about 1,400 emails. I am not sending anywhere near this volume of email through Google.
Here is s screenshot or the report: 07.16.2021-09.43.41

Is my domain being spoofed?

Hi Steve,
that doesn’t seem likely, with such a high volume repeatedly coming from the same source; do you have other vendors sending via Google? If you are seeing this traffic in the DMARC-Capable slot ,that might make the classification group together instead of showing that traffic under a different vendor name.
Google is a complex environment, used by a lot of senders.

Feel free to contact support with more details on this if you need more guidance.