Email Authentication
goo.su
SPF
failDeclares which servers may send mail for this domain.
v=spf1 include:spf.unisender.ru ~all
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; rua=mailto:dmarc@reporting.unisender.com
Mail Servers (MX)
10 mxa.eu.mailgun.org
10 mxb.eu.mailgun.org