IP Address Whitelisting

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Modified on: Thu, 26 Jan, 2023 at 6:45 AM

If you often send emails from the Cision Communications Cloud internally – to yourself or colleagues – and want to ensure deliverability, it is advised that your organization utilize one or both of the strategies below. If you have an internal IT team, they can help you complete this on your end.

 SPF
 In order for Cision to successfully spoof the from address of emails with a customer’s domain and increase the chance of inbox deliverability, your organization should append the below SPF record to your existing record:

“v=spf1 include:email.prnewswire.com”

Whitelisting
 If you choose to whitelist emails sent from the Cision Communications Cloud, you can whitelist the IP addresses below. At current, that list is:

• 167.89.0.0/17
• 208.117.48.0/20
• 50.31.32.0/19
• 198.37.144.0/20
• 198.21.0.0/21
• 192.254.112.0/20
• 168.245.0.0/17
• Cision also has a back-up email delivery system with a separate range of IP addresses. You may choose to whitelist these IPs, as well. The IP range for this system is 65.123.29.0/24.