Email security & deliverability · grade A
v=spf1 ip4:51.5.72.0/24 ip4:172.81.81.38 ip4:51.4.72.0/24 ip4:51.5.80.0/27 ip4:51.4.80.0/27 ip4:172.81.81.50 ip4:172.81.82.50 ip4:63.123.152.4 ip4:40.92.0.0/15 ip4:172.81.82.79 ip4:172.81.80.64 ip4:172.81.81.39 ip4:172.81.82.87 ip4:172.81.82.88 ip4:155.95.96.50 ip4:155.95.86.50 ip4:23.90.98.102 ip4:124.17.27.36 ip4:149.72.0.0/16 ip4:198.21.0.0/21 ip4:50.31.32.0/19 ip4:167.89.0.0/17 ip4:68.232.140.57 ip4:68.232.140.79 include:_s0.cdc.gov -all