Your message into ripe-list@ripe.net couldn't be recieved.
our policy settings at ripe-list@ripe.net have rejected your message.
Admin   ripe-list@ripe.net
Sender Action Required
or policy violation

Messages into ripe-list@ripe.net was not successful, after several attempts your domain keeps rejecting the message into your domain.
How to Fix It
 
If the problem continues, forward this message to your email admin. If you're an email admin, refer to the More Info for Email Admins section below.