Whitelisting domain

I recently have been helping an organization get their digital assets in order.
Their website was a mess. It had been hacked, but somewhat cleaned up at some point.
There were a lot of draft pages in there that had links for things like cialis and viagara. I just deleted those and went through every line of code to make sure nothing was left that was malicious.

The problem is that at work, I have Checkpoint, and the domain pops up as being blocked. Someone else I know uses Checkpoint and it’s blocked there as well. I looked up the domain on McAfee and it shows up as being categorized as a Pharmacy.

I’m not sure where to start to get the site whitelisted with Checkpoint and McAfee. I contacted Checkpoint and they kept wanting information about blades and machine IDs and all sorts of things that were not applicable to me. I just want to know how to get the thing whitelisted.

Does anyone have any ideas or suggestions? I’m about ready to just get a new domain and start over.