If the domain is being given away for free, it will be used a lot for scams etc, so a lot of systems will just start blocking it immediately. When I got my firs

If the domain is being given away for free, it will be used a lot for scams etc, so a lot of systems will just start blocking it immediately. When I got my first domain, I used one of the free TLDs and my university blocked it completely due to it being a scam. Not for any of the content on it, just the TLD being commonly used by scammers