Domains with DNS TXT v=spf1 include:_spf.siteffect.be include:spf.protection.outlook.com include:my.billit.be include:mailers.simple-simon.net -all

There is 1 domain that have DNS TXT set to v=spf1 include:_spf.siteffect.be include:spf.protection.outlook.com include:my.billit.be include:mailers.simple-simon.net -all.

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