I have created an email with my domain erasmuspluska1.eu but those who try to send me email get this error message:

Delivery to the following recipient failed permanently:

     trees@erasmuspluska1.eu

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain  erasmuspluska1.eu  by  mx.erasmuspluska1.eu . [62.149.128.151].

The error that the other server returned was:
550 5.1.1 <trees@erasmuspluska1.eu> : sorry, no mailbox here by that name (#5.1.1 - chkuser)

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