Domains with DNS TXT v=spf1 mx a:host01.iok.net include:_spfrelay.iok.net -all

There is 1 domain that have DNS TXT set to v=spf1 mx a:host01.iok.net include:_spfrelay.iok.net -all.

Top Domains with TXT set to v=spf1 mx a:host01.iok.net include:_spfrelay.iok.net -all