Email Authentication
yandex.by
SPF
warningDeclares which servers may send mail for this domain.
v=spf1 redirect=_spf.yandex.ru
DKIM
noneCryptographic signature on outbound mail (selector: none).
No record published.
DMARC
warningTells receivers what to do with mail that fails SPF/DKIM. Policy: none.
v=DMARC1; p=none; fo=1; rua=mailto:dmarc_agg@auth.returnpath.net,mailto:dmarc-rua@yandex.ru; ruf=mailto:dmarc_afrf@auth.returnpath.net
Mail Servers (MX)
10 mx.yandex.ru