Email security & deliverability · grade A
v=spf1 mx ip4:212.182.74.26 a:portal.umcs.pl a:mail2.usos.umcs.pl a:mail.usos.umcs.pl a:ozyrys.umcs.lublin.pl ip4:87.246.207.224/27 include:spf.protection.outlook.com ip4:5.201.121.16 ip4:5.201.5.126 ip4:87.246.207.176/29 ip4:87.246.207.154 ~all