TLSA lookup error
Since 2 weeks I'm getting an error when sending mail to @kpn.com email addresses. The error I get is : TLSA lookup error for mail4.kpnnet.org:25
I'm not sure if the problem is at the kpn.com domain or at the mailbox.org domain. Can someone please help with this, i did a lot of investigation but not able to find out where the problem is.
I make use of the mailbox.org webemail.
Thanks for the help,