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Thread: Turn off NDR?

  1. #1
    jimbo is offline Special Member
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    Default Turn off NDR?

    Hi all,

    How do I disable NDR notices in Zimbra?

    I'm running 6.0.5.

    Under heavy attack right now. I've implemented some of the other postfix settings found here on the server but need to turn off the sending of these Non Deliverable Receipts.

    Any way of doing this?

    Thanks so much for ANY help!

    [UPDATE]

    I've added

    Code:
    reject_unverified_recipient
    reject_unknown_recipient_domain
    to /opt/zimbra/conf/postfix_recipient_restrictions.cf

    but I've got an aliased domain as well and all these messages seem to be targeted at the aliased domain.
    Last edited by jimbo; 04-05-2011 at 02:51 PM. Reason: Added additional Info

  2. #2
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by jimbo View Post
    but I've got an aliased domain as well and all these messages seem to be targeted at the aliased domain.
    If by 'alias domain' you mean you have a catch-all address on the domain then you're seeing exactly why they're a bad idea. By definition you will not be able to reject email for non-existent addresses when a catch-all is designed to let all that email in. You need to give specific details of what you exactly done from the wiki article on Managing Domains and whether you've followed this: Managing Domains - Zimbra :: Wiki
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    Mike From Markham is offline Active Member
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    I am as well interested in disabling NDR's as I have having a major back scatter attack right now all from secureserver.net....
    Mike
    VCP3 & VCP4

  4. #4
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by Mike From Markham View Post
    I am as well interested in disabling NDR's as I have having a major back scatter attack right now all from secureserver.net....
    You need to give some information about what changes you've made to your system (do you have a catchall as mentioned in my previous post), any modifications to the anti-spam system and if so what were they? Have you looked at some of the threads in the forums that cover 'backscatter' spam and what can be done about it? Do you have any RBLs? Which version of Zimbra etc. etc.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
    tenpagyatso's Avatar
    tenpagyatso is offline Intermediate Member
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    Default

    Bump...

    Is it possible to disable NDR? More specifically, can I tune it to only send NDR notifies for local users only?
    Steven White
    Zimbra 6.0.16 NE on CentOS 5.3 on Dell 1950
    at Milwaukee Institute of Art & Design on Earth in Sol

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