@AlexV while I appreciate your response. I don't believe you understood the issue. Or did not read the issue completely.

The issue at hand is not with a vendor, nor is it with my company accepting email.

The problem is that a pair of Intuit's mail servers are appearing on a public spam blocklist called Spamcop. I provided the screenshot of the block that's visible for any and all to see. If any company's mail filter utilizes this public spam blocklist (as many do) Intuit's email will be rejected.

Additionally, the IPs that are appearing are NOT in Intuit's documented mail server list.

The emails that are being rejected due to the IP's being on the blocklist are from [email address removed] not from [email address removed]. And we won't be blindly allowing that address through to skip mail protections.