Email Authentication
test-hf.su
SPF
passDeclares which servers may send mail for this domain.
v=spf1 ip4:92.243.74.50 a mx ~all
DKIM
noneCryptographic signature on outbound mail (selector: none).
No record published.
DMARC
noneTells receivers what to do with mail that fails SPF/DKIM.
No record published.
Mail Servers (MX)
22 mail.example.com