Hello, we are increasingly having the problem that messages cannot be delivered.
Although the customer has already received emails from in the past.
#Here are two examples


Hello, we are increasingly having the problem that messages cannot be delivered.
Although the customer has already received emails from in the past.
#Here are two examples


Best answer by eeha0120
Hi.
This is similar to other reports where you instance’s mail subsystem may have been banned/flagged and hence you are not able to send emails from it.
Not that I could understand/translate the whole error message, but based on your description, this is usually addressed at backend with the help of support.
I’d suggest then to submit a support case instead.
Regards,
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