More than one MTA-STS record is published.

MTASTS_MULTIPLE_RECORDS · Severity: Error

• ErrorMTASTS_MULTIPLE_RECORDS

  More than one MTA-STS record is published.

  RFC 8461 section 3.1 says senders must treat the domain as having no policy when more than one record starts with v=STSv1.

  Recommendation: Keep exactly one MTA-STS TXT record at _mta-sts.

Reported by

• Domain health check
• MTA-STS and TLS-RPT check

Available through the API

• Domain health check API
• MTA-STS and TLS-RPT check API

Related findings

• Info MTASTS_MODE_NONE The MTA-STS policy is in mode none.
• Warning MTASTS_MODE_TESTING The MTA-STS policy is in testing mode.
• Error MTASTS_MX_NOT_COVERED An MX host is not covered by the enforced MTA-STS policy.
• Warning MTASTS_MX_NOT_COVERED_TESTING An MX host is not covered by the MTA-STS policy in testing mode.
• Error MTASTS_INVALID_POLICY The MTA-STS policy file is not valid.
• Error MTASTS_INVALID_RECORD The MTA-STS record has invalid syntax.

All findings