Seems to be this:
https://www.e-mail-made-in-germany.de/index.html
Is it a forwarded mail?
No it is directly sent from our side to the address
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Am 2023-03-23 09:41, schrieb Michael Righter via swinog:
Hi
A mail to @online.de is blocked on their site with this error. Never
seen such an error.
Anyone seen this before or knows a contact to them?
2023-03-21T09:00:04Z;EMIG;mx01.emig.kundenserver.de[217.72.192.66];400
EmiG fingerprint
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