Domains with DNS TXT v=spf1 include:_spf.google.com include:_spf-inc1.strongmail.com include:mktomail.com include:zoomerang.com -all
There is 1 domain that have DNS TXT set to v=spf1 include:_spf.google.com include:_spf-inc1.strongmail.com include:mktomail.com include:zoomerang.com -all.