Email Authentication
blackhat.com
SPF
passDeclares which servers may send mail for this domain.
v=spf1 include:_u.blackhat.com._spf.smart.ondmarc.com ~all
DKIM
passCryptographic signature on outbound mail (selector: google).
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8Oyjt/lBVVz2WwxHOk9apm/lYIIgkO/wz5CNTK5AlWEo9BVbXN3QBuCSt7x5YFDcfgClPE8vukGNR0HZ4lrinNY1U/EigkvCntY6Q4fms1EFOKC9b2rzi9OPdPCc6ZeSE9X94FhWl+VGskV6unMOPmw8+FJc+qRoWHUpNGGYEiQIDAQAB
DMARC
warningTells receivers what to do with mail that fails SPF/DKIM. Policy: none.
v=DMARC1; p=none; pct=100; fo=1; ri=3600; rua=mailto:937ab994@inbox.ondmarc.com; ruf=mailto:937ab994@inbox.ondmarc.com;
Mail Servers (MX)
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 aspmx2.googlemail.com
10 aspmx3.googlemail.com