Email Formats

{
  "mx": [
    "10 filter.onlinespamfilter.nl.",
    "10 filter.onlinespamfilter.com."
  ],
  "spf": [
    "v=spf1 a:mail.calderholding.nl ip4:37.74.81.153 include:_spf.calderholding.io include:_spf.onlinespamfilter.nl -all"
  ]
}