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Thread: Deferred Error Help

  1. #1
    physikal is offline Loyal Member
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    Apr 2009
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    Default Deferred Error Help

    I am getting a message hung up that is being sent by our user, to a comcast address. The error is: comcast requires that all mail servers must have a ptr record with a valid reverse dns entry. currently your server does not fill that requirement.

    Any ideas on how I go about fixing this?

  2. #2
    bdial's Avatar
    bdial is offline Moderator
    Join Date
    Jul 2007
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    you need to contact your isp or whoever controls the dns for your ip block to add a ptr record for your mail server. that is a reverse dns record. it's not enough for like to resolve to, also needs to resolve ot

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