Email security & deliverability · grade A
v=spf1 ip4:12.23.21.116 ip4:63.137.180.136/29 ip4:54.240.58.216/30 ip4:198.37.159.2 ip4:168.245.16.120 ip4:168.245.44.103 include:_spf.centercode.com include:spf.protection.outlook.com include:amazonses.com include:us._netblocks.mimecast.com include:mail.zendesk.com -all