The 550 5.1.2 error means the recipient domain has no working mail servers. Learn the causes and how to fix this SMTP bounce.
5.1.2
| Component | Value | Meaning |
|---|---|---|
| Class | 5 | Permanent failure |
| Subject | 1 | Addressing |
| Detail | 2 | Bad Destination Domain |
Per RFC 3463 Enhanced Mail System Status Codes. Class (X) = severity, Subject (Y) = category, Detail (Z) = specific condition.
The domain part of the recipient address doesn't have working mail servers, or the domain doesn't exist at all. The email has nowhere to go.
These are real bounce message formats you might receive. Paste yours into the Bounce Decoder for instant analysis.
550 5.1.2 Bad destination mailbox address 550 5.1.2 <[email protected]>: Recipient address rejected: Domain not found
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