Email Authentication

iheart.com

SPF

pass
Declares which servers may send mail for this domain.
v=spf1 ip4:207.230.136.140/29 ip4:207.230.157.126/29 mx a a:out-smtp.criticalmassmedia.com a:out-smtp.lob-hosting.com include:sendgrid.net include:_spf.google.com include:spf.mandrillapp.com include:mail.zendesk.com ~all

DKIM

pass
Cryptographic signature on outbound mail (selector: s1).
k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2L50urCF2alIfTKANLrTTTukeVlohnJsF1aWws7vLSsUxyNmNNnRpWK4bGQHlR+cS0hBicjsYpIrCvUHbjzm/6oF5UATAzc6IOhNvHRBLxHPPCaF1DMcLEQxxkINF7vV23JNY05Hb+rPFAO6LUtnViAsUpQy2jAEWRF6zJYN6kjdXAh9oS4o1E8hHo05qLkrG7jTdV4O7r+yMIxsMnSi2ZRohVKD0Rus9J4JRzbW9sewFaX2+g3ryxeFudHjG8QWFwX1hrQf8iej53odOGhj0hoki4m3nWO7E6GlQ3TzmRR7iVzwfzAtpPfi3HWk26Jbchju+8LVxertuS62mLaiSQIDAQAB

DMARC

warning
Tells receivers what to do with mail that fails SPF/DKIM. Policy: none.
v=DMARC1; p=none;

Mail Servers (MX)

1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com