How do I prevent failed emails from being rejected?

We have a bunch of customers who are unfortunately sending via misconfigured servers/domains that fail SPF checks. Currently these messages are being outright rejected. We cannot afford to reject their emails - these are critical to our business. However, we would still like SPF checking so that we can (for instance) later set up our mail clients to at least highlight failed emails to make it easier to still distinguish spam.

Are the following changes to policyd-spf.conf sufficient? Not sure if I caught everything, and I don't have a spare email server/domain to misconfigure and test with.

Thanks in advance.

HELO_reject = False
Mail_From_reject = False