EM-3604
The mail server refused the message
Why it happens
Your SMTP server refused this message under its policies (spam filtering or content rules, for example). It was not sent, and Rabt does not retry it on its own. The server’s full message is in the technical details.
What to do
Read the server’s message in the technical details and change the reply or the server settings accordingly, then send it again.
- HTTP status
- 422
- Retrying does not help