Domains with DNS TXT v=spf1 include:_spf.salesforce.com a:production.web.wd.demandware.net -all

There is 1 domain that have DNS TXT set to v=spf1 include:_spf.salesforce.com a:production.web.wd.demandware.net -all.

Top Domains with TXT set to v=spf1 include:_spf.salesforce.com a:production.web.wd.demandware.net -all