Domains with DNS TXT v=spf1 include:surveycenter.com include:spf.surveycenter.com include:cust-spf.exacttarget.com -all
There is 1 domain that have DNS TXT set to v=spf1 include:surveycenter.com include:spf.surveycenter.com include:cust-spf.exacttarget.com -all.