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AmityWeb2021's avatar
AmityWeb2021
Copper Contributor
Dec 22, 2021

Trying to find help for 550 5.7.511 Access denied, banned sender

I run a mail server for many business clients of mine. Microsoft have blocked our IP address, so we cant send to Office365 email addresses. I get a bounce back saying:   host cr-studio.mail.protec...
office 365
stefano-it's avatar
stefano-it
Copper Contributor
Dec 31, 2021

AmityWeb2021 

 

Exaclty the same, my server is on linode. In the loop tryng to delist my server I got a message indicating that the ban is do to a rule by mailto:Email address removed

 Wrote an email to postmaster @frontbridge.com  but haven't received anything yet.

 

 

AmityWeb2021's avatar
AmityWeb2021
Copper Contributor
Jan 01, 2022
Has anyone got this issue on non-Linode servers? It seems everyone is on linode.
  • MiaTom's avatar
    MiaTom
    Copper Contributor
    Jan 18, 2022

    Hi, just reading this post, as I am having same issue since 24 December 2021, and using Linode 

    AmityWeb2021 

    • shirro's avatar
      shirro
      Copper Contributor
      Jan 20, 2022

      Has there been any news on if there is a class action or anti-trust action being initiated over Microsoft blocking a competing hosting provider?

      • stefano-it's avatar
        stefano-it
        Copper Contributor
        Jan 20, 2022

        shirro 

        I would expect some action from linode ... but the don't seems to care much ....

        Waiting for Microsoft to understand and act is depressing ...

         

        So my email traffic to domains managed by Microsoft is now redirected through outboundsmtp.com ... I can't see a better solution for now.

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