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Remote Server returned '550 5.7.501 Access denied, spam abuse detected. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653' RRS feed

  • Question

  • Hello everyone,

    i have an issue on sending email using the office365 SMTP.

    i have fully configured PowerMTA server to send email using office365 as third part apps, we are using an IPv6/IPv4 on our PMTA server. all goes fine when i use an IPv4, but when i use the other one IPv6 our email rejected and marked as banned due spam abuse detected.

    i don't know if there is an issue on "onmicrosoft.com" domain?

    OR if related to the IP's.

    PS: All IP are not blacklisted.

    Thanks

    Thursday, October 19, 2017 8:57 PM