This is the mail system at host mailout.one.com.
I’m sorry to have to inform you that your message could not be delivered to one or more recipients. It’s attached below.
<foreningen@sknf.se> failed: host mx3.pub.mailpod8-cph3.one.com (185.164.14.104) said: 550 5.7.1 Blocked by email filter (d80507ab-2fcd-11f0-ac08-98039b062cb2)