Email provider
Rambler SMTP Error Codes and Bounce Messages
Rambler is a Russian search and mail provider. There is no dedicated postmaster site, so misclassified mail is disputed with its abuse team.
- Codes on record
- 3
- Responses
- 4
Postmaster & documentation
SMTP 4521 response
A temporary problem. The sending server keeps retrying for a while, and delivery often recovers on its own once the underlying issue clears. See SMTP 452 across every provider
SMTP 5402 responses
A hard failure. The receiving server has refused the message for good and will not accept an unchanged retry without a change on the sending side. See SMTP 540 across every provider
SMTP 5541 response
A hard failure. The receiving server has refused the message for good and will not accept an unchanged retry without a change on the sending side. See SMTP 554 across every provider
Rambler bounce questions
›Why is Rambler bouncing my email?
Rambler is a Russian search and mail provider. There is no dedicated postmaster site, so misclassified mail is disputed with its abuse team. Match the exact wording of your bounce to one of the 4 responses on this page to find the specific reason and fix.
›How do I improve deliverability to Rambler?
Authenticate with SPF, DKIM and DMARC, keep your sending IP and domain reputation clean, mail only engaged recipients, and honour unsubscribes. Rambler also publishes postmaster guidance, linked on this page.
