Domains with DNS TXT v=spf1 include:spf.os-ns.com a mx ip4:62.82.135.60 ip4:62.82.134.39 ip4:212.34.146.51 include:sparkpostmail.com -all
There is 1 domain that have DNS TXT set to v=spf1 include:spf.os-ns.com a mx ip4:62.82.135.60 ip4:62.82.134.39 ip4:212.34.146.51 include:sparkpostmail.com -all.