What Hostnames need to be whitelisted?

*.acctivate.com Acctivate does call back to register.acctivate.com as well as a few other subdomain sites for certain services.
- hub.acctivate.com
*.intuit.com api.intuit.com is used for QuickBooks Payments
https://merchantcenter.intuit.com may need to be specifically added, but the previous site should handle this direct link to QuickBooks Merchant Center.
*.microsoft.com We link to multiple microsoft help topics using the following sub-domains:
- support.microsoft.com
- www.microsoft.com
- windows.microsoft.com
*.avalara.com Used for Avatax tax calculations if that service is utilized by the company.
Map sites used when viewing customer addresses:
- www.google.com
- maps.yahoo.com
- maps.expedia.com

In certain environments, especially hosted server environments, a system administrator may need to whitelist the following sites so Acctivate can access these services.