Microsoft Office

Microsoft 365 Exchange Error Code 4.7.500-699 – Access denied, please try again later

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 4.7.324 – dnssec-invalid: Destination domain returned invalid DNSSEC records

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

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

Microsoft 365 Exchange Error Code 4.7.321 – starttls-not-supported: Destination mail server must support TLS to receive mail.

Microsoft 365 Exchange Error Code 4.7.26 – Access denied, a message sent over IPv6 [2a01:111:f200:2004::240] must pass either SPF or DKIM validation, this message is not signed

Microsoft 365 Exchange Error Code 4.5.3 – Too many recipients

Microsoft 365 Exchange Error Code 4.4.7 – Message expired

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

Microsoft 365 Exchange Error Code 432 4.3.2 – STOREDRV.Deliver; recipient thread limit exceeded

Microsoft Outlook Email Error Code – 550 OU-002

Microsoft Outlook Email Error Code – 550 OU-001

Microsoft Outlook Email Error Code – 550 DY-002

Microsoft Outlook Email Error Code – 550 DY-001

Microsoft Outlook Email Error Code – 550 SC-004

Microsoft Outlook Email Error Code – 550 SC-003

Microsoft Outlook Email Error Code – 550 SC-002

Microsoft Outlook Email Error Code – 550 SC-001

Microsoft Outlook Email Error Code – 421 RP-003