SPF records
Information about the permissible posts of mail for the domainv=spf1 ip4:178.210.92.248 ip4:178.210.92.249 ip4:193.106.92.68 ip4:193.106.94.87 include:spf.unisender.com include:feniks-gro.nichost.ru include:mx50.okna-stolicy.ru +a +mx -all