RAMP barcode emails and SPF

Hello everyone!

We've run into an issue where RAMP-generated barcode emails are being silently deleted by a number of email providers.

I traced down some of the issue to being an SPF problem - our SPF record was hard fail and did not include any method for our outboard systems.  Of course, I've changed to a soft fail and added the sender IP (216.146.33.210 - an Oracle cloud IP) that I know about, but I'd rather use a more inclusive include specific to RAMP.

Does anyone have a recommended SPF include for RAMP-generated mails?

Thank you!

--alex