Domains with DNS TXT v=spf1 ip4:204.13.236.135 ip6:2604:a00:5:1905:216:3eff:fe2c:8a0d mx a include:spf.improvmx.com ~all
There is 1 domain that have DNS TXT set to v=spf1 ip4:204.13.236.135 ip6:2604:a00:5:1905:216:3eff:fe2c:8a0d mx a include:spf.improvmx.com ~all.