Email security & deliverability · grade A
v=spf1 mx include:spf.protection.outlook.com include:mail.zendesk.com ip4:205.220.182.197 ip4:205.220.170.197 ip4:23.251.237.159/32 ip4:23.251.237.160/29 ip4:23.251.237.168/30 ip4:151.124.248.17 ip4:151.124.248.18 ip4:151.124.250.249 -all