SPF records
Information about the permissible posts of mail for the domainv=spf1 ip4:46.38.35.245 ip4:78.108.199.38 ip4:185.204.126.17 ip4:185.204.126.19 ip4:217.199.214.91 ip4:84.253.116.210 ip4:46.38.35.252 ip4:185.204.126.20 include:mxsspf.sendpulse.com +a +mx include:spf.prexmail.ru include:spf.unisender.com ~all