

I don’t use Google Workspaces that’s just the first article I found.
Maybe I misunderstood then. I though PTR records had to resolve to your email domain, not just match the IP address with an A record that resolves to the same IP. There is a PTR record that resolves to ip.googlefiber.net but it does not match my email domain.
I haven’t heard Amex mentioned in any of this so, I guess they’re ok?