Email security & deliverability · grade A
v=spf1 mx a include:_spf.google.com include:spf.unisender.com ip4:213.247.194.64/27 ip4:89.249.28.32/27 ip4:195.19.25.0/24 ip4:109.238.243.160/28 ip4:195.208.0.0/16 ip4:94.100.176.0/20 ip4:194.226.180.64/27 ip4:95.128.177.183 ip4:185.169.153.32/28 a:sms4b.ru -all