Email Authentication
getcourse.ru
SPF
passDeclares which servers may send mail for this domain.
v=spf1 include:2aefc998b1867ef3a01ecb5dfc8d717e.gca.to include:_spf.yandex.ru ~all
DKIM
passCryptographic signature on outbound mail (selector: mail).
v=DKIM1; k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3In7QdEdg4CPDLTTDT79gemlOzsqQWcG69pmHqukugDfK0AbY42lr8NNnRYRUSSzWJPKbQIYVayRRUQtZ1oSB0kKeD0A/RxHMzhHcKFC5Uc70BX8b1SIJFOekc9dZDaP3n0MGWfnQMMOhRfkIK+0u7FBWSB1TegvKOW+R2eBmqwIDAQAB
DMARC
passTells receivers what to do with mail that fails SPF/DKIM. Policy: reject.
v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@getcourse.ru; ruf=mailto:dmarc@getcourse.ru; fo=1; adkim=s; aspf=s
Mail Servers (MX)
10 mx.yandex.ru