Tag: Outlook Errors

Microsoft 365 Exchange Error Code 5.7.324 – dnssec-invalid: Destination domain returned invalid DNSSEC records

Microsoft 365 Exchange Error Code 5.7.506 – Access Denied, Bad HELO

Microsoft 365 Exchange Error Code – This value is returned by the mail server that rejected the original message.

Microsoft Outlook Email Error Code – 421 RP-002

Microsoft 365 Exchange Error Code 4.7.323 – tlsa-invalid: The domain failed DANE validation.

Microsoft 365 Exchange Error Code 4.7.325 – certificate-host-mismatch: Remote certificate MUST have a common name or subject alternative name matching the hostname (DANE)

Microsoft 365 Exchange Error Code 5.4.300 – Message expired

Microsoft 365 Exchange Error Code 5.0.350 – Generic error, x-dg-ref header is too long, or Requested action not taken: policy violation detected (AS345)

Microsoft 365 Exchange Error Code 5.7.64 – TenantAttribution; Relay Access Denied

Microsoft 365 Exchange Error Code 5.7.325 – certificate-host-mismatch: Remote certificate MUST have a common name or subject alternative name matching the hostname (DANE)

Microsoft 365 Exchange Error Code 5.7.323 – tlsa-invalid: The domain failed DANE validation.

Coding on a computer screen

Microsoft 365 Exchange Error Code 5.5.0 – 550 5.5.0 Requested action not taken: mailbox unavailable

Microsoft 365 Exchange Error Code 5.7.504 – [[email protected]]: Recipient address rejected: Access denied

Microsoft 365 Exchange Error Code 5.7.507 – Access denied, rejected by recipient

Microsoft 365 Exchange Error Code 5.2.122 – Recipient’s per hour message receive limit exceeded.

Microsoft 365 Exchange Error Code 4.7.322 – certificate-expired: Destination mail server’s certificate is expired.

Microsoft 365 Exchange Error Code 5.2.2 – Submission quota exceeded

Microsoft 365 Exchange Error Code 4.4.316 – Connection refused [Message=Socket error code 10061]

Microsoft 365 Exchange Error Code 5.7.505 – Access denied, banned recipient

Microsoft 365 Exchange Error Code 5.1.8 – Access denied, bad outbound sender