This site has an SPF record for MailChimp managed email sending.
https://mailchimp.com
Email Hosting Providers · Campaign Management
Get access to data on 798,817 websites MailChimp SPF Customers. We know of 469,535 live websites using MailChimp SPF and an additional 329,282 sites that used MailChimp SPF historically and 221,164 websites in the United States.
MailChimp SPF websites that are also using other technologies.
Get a list of 798,817 websites using MailChimp SPF which includes location information, hosting data, contact details, 469,535 currently live websites and an additional 1,069,061 domains that redirect to sites in this list. 329,282 sites that used this technology previouslyand 221,164 websites in the United States currently using MailChimp SPF.
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