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Thread: My IP Being blocked by CSI Cloudmark but no one else?

  1. #1
    Senior Member Woodcycl's Avatar
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    My IP Being blocked by CSI Cloudmark but no one else?

    I am a Web Host and have a few companies hosted for their websites and email. Twice now, once my email and once recently a clients, undeliverable email has returned mentioning SMTP Error and RBL Restriction with my server's IP address. I'm on a VPS server.

    Here's an example of the most recent one:

    This message was created automatically by mail delivery software.

    A message that you sent could not be delivered to one or more of its
    recipients. This is a permanent error. The following address(es) failed:

    removedforprivacy@insightbb.com
    SMTP error from remote mail server after initial connection:
    host mx.insight.synacor.com [208.47.185.21]: 550 5.7.1 RBL Restriction:
    - <174.121.219.117> - See http://csi.cloudmark.com/reset-request/?174.121.219.117
    When this happened to me, I went to http://csi.cloudmark.com/en/reset/ and submitted my information to have my IP removed from their list. I checked all the other blacklists and I was not on any of them. I read thru Cloudmark's FAQ stating that my IP may not be on any other list, blah blah blah. Shortly after my submission my outgoing email started working again.

    Then, I find out today that one of my clients is receiving similar returned email messages (see the one above). I submitted the request once again. But, I'm perplexed. I only have maybe 10 clients on my host server and myself. I know none of my clients are spamming. What can I do to help eliminate the problem overall?

    Any help is greatly appreciated.

  2. #2
    Administrator Steve R Jones's Avatar
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    Your clients might not be spamming - but anyone getting a mail from them might consider it spam and report it. Nuttin much you can do about that.

  3. #3
    Senior Member Woodcycl's Avatar
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    Just seems like there is "something" one can do to remedy this kind of problem. Basically, my client is going to see that my email services via their domain name is not working and look elsewhere. I've submitted a removal request from Cloudmark, but the IP appears to still be being blocked by certain ISPs.

    I guess I could attempt to contact those individual internet carriers about the issue? But, boy, would that be a ton of work that may not lead to any real results.

    Any other ideas?

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