All emails that I send to my clients with a Microsoft account are rejected RRS feed

  • Question

  • My IP address is clear and clean, not blacklisted at all... the DKIM, SPF and DMARC are all set correctly. My score on is 10/10 and still all my email that I send to outlook, live and hotmail account are rejected : 550 SC-001 Mail rejected by Microsoft .

    I am tired of Microsoft strategy to push us to use their plateform. I even read on this forum that the answer for this same problem given by Microsoft staff was to move to office365. I am outrage and I think this is blackmail.

    You can verify all what I just said by checking my IP : 

    Main server IP :

    Domain IP :

    and my domain name is not listed in any DBL tested on

    I'm tired of all this %$#* !


    Thursday, July 13, 2017 2:02 AM

All replies

  • Hello XemmeX,

    Based on my experience, you may need to create a PTR DNS record, which enables receiving side mail server to resolve IP to the FQDN of SMTP server, for example mailserver. Usually, the PTR record should be created by the ISP.

    In addition, based on the official documentation, the description for the error code is as below.

    550 SC-001: Mail rejected by 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.

    Since the IP address is not black listed, I would recommend to send an email in TXT format to see if the email can be received in outlook mailbox. That can verify if the previous email contains spam-like characteristics .

    Best regards,
    Andy Liu

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    Friday, July 14, 2017 2:26 AM
  • I use that to test what a domain needs.  Yes it's a pain in the rear.
    Thursday, July 20, 2017 7:33 PM