Domains with DNS TXT v=spf1 a a:server1.filtermail.eu a:server2.filtermail.eu a:webmail.os2.nl ip4:31.160.181.233 -all
There is 1 domain that have DNS TXT set to v=spf1 a a:server1.filtermail.eu a:server2.filtermail.eu a:webmail.os2.nl ip4:31.160.181.233 -all.