Domains with DNS TXT v=spf1 a mx include:_spf4.yourfilter.nl include:_spf6.yourfilter.nl a:smtp-cl01.hostcontrol.com a:pcx.yourfilter.nl include:spf.medusa.nl include:spf.mandrillapp.com include:spf.mailcamp.nl -all

There is 1 domain that have DNS TXT set to v=spf1 a mx include:_spf4.yourfilter.nl include:_spf6.yourfilter.nl a:smtp-cl01.hostcontrol.com a:pcx.yourfilter.nl include:spf.medusa.nl include:spf.mandrillapp.com include:spf.mailcamp.nl -all.

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