A lot of the users will be accessing through hospital computers which tend to use additional security software, so I've gotten some feedback that it is being blocked (Trend Micro Office Scan said it was "untested").

More recently another user using a hospital with Forcepoint says that it is also blocked (similarly due to being a new domain)

The domain is about a week old. I have submitted the domain to Office Scan's website https://global.sitesafety.trendmicro.com/

and they have said now it will be tested, and I talked to rep there that says it usually takes about 2-5 days.

So my question boils down to: 1) Does anybody know in general how long it takes for new domains to be vetted by these various security software programs? 2) Although I could in theory try to speed things up by contacting each company, I would rather not waste the time. Is there such a thing as a global whitelist that I could submit my new domain to?

Thanks It's been great reading articles here over the years and using this site for resources on python and then flask.