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HOTMAIL - Bounce Message Error Codes


These error codes apply to recipients with hotmail, live or outlook.com domain names.
Error codes starting with 4xxx are temporary problems. Error codes starting with 5xxx are permanent / fatal errors:

421 RP-001  Click for help & fix
The mail server IP connecting to Outlook server has exceeded the rate limit allowed. Reason for rate limitation is related to IP/domain reputation. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
421 RP-002  Click for help & fix
The mail server IP connecting to Outlook server has exceeded the rate limit allowed on this connection. Reason for rate limitation is related to IP/domain reputation. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
421 RP-003  Click for help & fix
The mail server IP connecting to Outlook server has exceeded the connection limit allowed. Reason for limitation is related to IP/domain reputation. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
550 DY-001  Click for help & fix
Mail rejected by Outlook for policy reasons. We generally do not accept email from dynamic IP's as they are not typically used to deliver unauthenticated SMTP email to an Internet mail server. If you are not an email/network admin please contact your Email/Internet Service Provider for help. http://www.spamhaus.org maintains lists of dynamic and residential IP addresses.
550 DY-002  Click for help & fix
Mail rejected by Outlook for policy reasons. The likely cause is a compromised or virus infected server/personal computer. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
550 OU-001  Click for help & fix
Mail rejected by Outlook for policy reasons. If you are not an email/network admin please contact your Email/Internet Service Provider for help. For more information about this block and to request removal please go to: http://www.spamhaus.org.
550 OU-002  Click for help & fix
Mail rejected by Outlook for policy reasons. Reasons for rejection may be related to content with spam-like characteristics or IP/domain reputation. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
550 SC-001  Click for help & fix
Mail rejected by Outlook for policy reasons. Reasons for rejection may be related to content with spam-like characteristics or IP/domain reputation. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
550 SC-002  Click for help & fix
Mail rejected by Outlook for policy reasons. The mail server IP connecting to Outlook has exhibited namespace mining behavior. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
550 SC-003  Click for help & fix
Mail rejected by Outlook for policy reasons. Your IP address appears to be an open proxy/relay. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
550 SC-004  Click for help & fix
Mail rejected by Outlook for policy reasons. A block has been placed against your IP address because we have received complaints concerning mail coming from that IP address. We recommend enrolling in our Junk Email Reporting Program (JMRP), a free program intended to help senders remove unwanted recipients from their email list. If you are not an email/network admin please contact your Email/Internet Service Provider for help.