Domains with DNS TXT v=spf1 +a +mx +a:yellow.fffect.nl include:spf.smtp2go.com ~all

There are 13 domains that have DNS TXT set to v=spf1 +a +mx +a:yellow.fffect.nl include:spf.smtp2go.com ~all. The top 13 records ordered by domain rank are listed below.