Domains with DNS TXT v=spf1 mx a:mail.johnsonservices.net a:smtp.johnsonservices.net include:spf.hornetsecurity.com -all
There is 1 domain that have DNS TXT set to v=spf1 mx a:mail.johnsonservices.net a:smtp.johnsonservices.net include:spf.hornetsecurity.com -all.