How to resolve spf.constantcontact.com to an IP address?

[AndyC57]

I'm flattening our SPF record and we have an include for spf.constantcontact.com.  However, I can't resolve that name.  What is the record type I need to query to get the resulting set of IP addresses?

[William_A]

Hello @AndyC57 ,

Based on what you're describing, I'd advise going through these articles to gather the info your need for your records:

• Include Constant Contact IP Addresses in Your SPF or SenderID Record
• Self-authenticate your emails using your own domain
• Safelist Constant Contact web domains in a security program

If these articles are unable to assist with including that domain, I'd advise speaking with our Delivery team for more specialized insight and assistance.