SMTP Error Code 540
The transaction failed permanently. The server will not try to send the message again. The email was returned to you likely because the intended recipient's account has been suspended or deactivated.
Providers
- Rambler↑
- 540 5.7.1 <example@rambler.ru>: recipient address rejected: Inactive
- 540 5.7.1 <example@rambler.ru>: recipient address rejected: Blocked