Domains with DNS TXT v=spf1 a:host01.iok.net a:h03.iok.net include:_spf.prod.hydra.sophos.com include:spf.hornetsecurity.com -all

There is 1 domain that have DNS TXT set to v=spf1 a:host01.iok.net a:h03.iok.net include:_spf.prod.hydra.sophos.com include:spf.hornetsecurity.com -all.

Top Domains with TXT set to v=spf1 a:host01.iok.net a:h03.iok.net include:_spf.prod.hydra.sophos.com include:spf.hornetsecurity.com -all