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mike-p

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I am getting this message on all emails sent to comcast.net.
What does this error mean? xx is my mail server IP.
Failed (550 xx.xx.xx.xx blocked by ldap:ou)

Thanks
Mike
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sedell

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It means you've been blocked by their somewhat overly aggressive custom blacklist. I've run into that same message with Verizon, and another big ISP (can't remember which). In both cases, the message logged in the SMTP communication contained a URL. You may have to turn on SMTP debugging to see it. Going to the URL brought me to a page where I could get de-listed.

Scott
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