To ensure the smooth and secure operation of our infrastructure, connections are temporarily rejected in certain cases and in the event of violations of our guidelines.
Please take all necessary measures to prevent misuse of your system in order to prevent unwanted connections and spam being sent.
Please also note our requirements and recommendations.
If the situation does not improve afterwards, you can contact us using the form on this page.
In this case, please provide us with the full error message you received from our system in text form.
See also: General information on our error messages.