Email security & deliverability · grade A
v=spf1 a a:bonn.de include:mail.kdvz-frechen.de ip4:91.213.177.151 ip4:91.213.177.152 ip4:91.213.177.153 ip4:91.213.177.154 ip4:91.213.177.180 ip4:194.45.37.22 ip4:195.38.20.30 -all