Domains with DNS TXT v=spf1 mx a ip4:178.248.166.38 ip4:217.21.240.160 ip4:217.21.240.170 include:_spf.onlinespamfilter.nl ~all
There is 1 domain that have DNS TXT set to v=spf1 mx a ip4:178.248.166.38 ip4:217.21.240.160 ip4:217.21.240.170 include:_spf.onlinespamfilter.nl ~all.