553 Relaying disallowed

553 Relaying disallowed

Hello.

I have a problem receiving e-mails at the post office biuro@muzea-kreator.pl. When someone sends an email to this address, they get a reply message:

The message was not delivered
Your message was not delivered to: biuro@muzea-kreator.pl because the remote server is incorrectly configured. For more information, please see the technical details below.
Response received from remote server:
553 Relaying disabled


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