Outlook

Microsoft 365 Exchange Error Code 5.7.1 – Unable to relay

Microsoft 365 Exchange Error Code – This value is the name of the mail server that rejected the message.

Microsoft Outlook Email Error Code – 550 SC-004

Microsoft 365 Exchange Error Code n/a – The message can’t be submitted because the sender’s submission quota was exceeded

Microsoft 365 Exchange Error Code More info for email admins – This section provides a detailed explanation of the problem and solution along with technical details and a link to a web-based article that has detailed reference information.

Microsoft 365 Exchange Error Code 4.7.850-899 – Access denied, please try again later

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