This is the mail system at host mx.druid.dk

I'm sorry to have to inform you that your message could not be delivered to one or more recipients. 
For further assistance, please review bandwidth to release pending incoming messages.

If you do so, you have sent a mail to postmaster to include this problem report.

    Review Bandwidth
                       The mail system:

        <    druid@druid.dk>: host
            mx-host.mail.protection.druid.dk  [104.47.1.36] said: 451 4.7.500 Server
        busy. Please try again later from [192.185.187.5]. (S77719)
        [     VE1EUR01FT096.eop-EUR01.prod. protection.druid.dk] (in reply to end of
        DATA command)