Email Authentication
headtopics.com
SPF
passDeclares which servers may send mail for this domain.
v=spf1 redirect=_spf.yandex.net include:_spf.yandex.net ~all
DKIM
passCryptographic signature on outbound mail (selector: mail).
v=DKIM1; k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCr3LmwYDPf1NJnOoGVlycvM6Up3Gk2QcY+bpyXZoaYelzwwtfmRvz1G7qCV8VvHD1x/BkZe1OAdeaRV1CG+w97OLtv8vEpU9TTGOo8CXrcPlglnxmSMG5ZQMicvySUlwh1aN+x4SOUsv8XxcfJZRyIUXfTK6S0E1a8il7/5Wc4hQIDAQAB
DMARC
noneTells receivers what to do with mail that fails SPF/DKIM.
No record published.