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Resolved Let's Encrypt Error 400

A.Roemer

New Pleskian
Hello, the following error is displayed to me if I would like to create a Let's Encrypt certificate:

"Fehler: Fehler bei der Installation des SSL-Zertifikats von Let's Encrypt: Invalid response from https://acme-v01.api.letsencrypt.org/acme/new-reg.
Details:
Type: urn:acme:error:invalidEmail
Status: 400
Detail: Error creating new registration :: DNS problem: NXDOMAIN looking up MX for roemer.spcae"

DNS records should all be set correctly. I add a screenshot of the settings.
How could this be solved

Many thanks in advance
 

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