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:

  • hightail.com
  • spaces.hightail.com
  • hightailcdn.com
  • yousendit.com

If IP addresses are required for whitelisting, the following CIDR blocks are currently in use:

  • 199.182.176.0/21 (USA)
  • 34.248.0.0/13 + 52.208.0.0/13 + 52.48.0.0/14 (Europe)
  • 52.62.0.0/15 + 52.64.0.0/17 (Australia)
  • 52.0.0.0/11 + 54.184.0.0/14 (Spaces)
  • Spaces Downloads

Hightail sends SMTP e-mail notifications from the following domains:

  • hightail.com
  • hightailmail.com
  • spaces.hightailmail.com
  • yousendit.com

e-mail notifications are relayed through the following IP addresses:

198.37.148.95  o1.spaces.hightailmail.com
208.117.61.168  o2.ymail.yousendit.com
208.117.61.175  o3.ymail.yousendit.com
208.117.61.213  o4.ymail.yousendit.com

 

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