IP Address range and Port Information
Customers using a proxy server or strict firewall may need to whitelist Hightail's services to gain access.
Hightail encourages customers to use domain-based white listing if possible. Hightail uses SSL/TLS (tcp port 443) for all connections under the following domain names:
The Spaces website also uses references following 3rd party websites:
Hightail sends SMTP e-mail notifications from the following domains:
e-mail notifications are relayed through the following IP address: