Email security & deliverability · grade A
v=spf1 ip4:212.71.124.231 ip4:212.71.124.232 ip4:20.250.76.7 ip4:20.250.75.252 ip4:212.71.111.45 ip6:2001:67c:10ec:57c1::21 ip6:2001:67c:10ec:57c2::21 include:sympa.ethz.ch include:mailgun.org include:spf.protection.outlook.com ~all