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Should I enable Zen RBL on my CPanel server?

Discussion in 'E-mail Discussion' started by albatroz, Dec 24, 2012.

  1. albatroz

    albatroz Well-Known Member

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    I was going to enable this RBL when I read the following text on this URL: The Spamhaus Project - ZEN
    ".. do not use ZEN on smarthosts or SMTP AUTH outbound servers for your own customers (or you risk blocking your own customers)"

    What do you think?
     
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  2. Infopro

    Infopro cPanel Sr. Product Evangelist
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    Yes, I would.

    zn.spmhsorg.png
     
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  3. albatroz

    albatroz Well-Known Member

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    It seems like some IPs from Yahoo and Google Groups are listed in ZEN


    I hope it won´t block email messages sent by my customers using Outlook and their ADSL connections
     
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  4. mtindor

    mtindor Well-Known Member

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    It shouldn't block any emails from users who use SMTP Auth. I've never had an authenticated user complain that they were rejected by any blacklist I use. I'm pretty sure authenticated senders are exempt from RBL tests. Don't quote me on that though.

    M
     
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  5. albatroz

    albatroz Well-Known Member

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    I enabled Zen RBL and several of my customers started to call me
    because their customers emails started to bounce.
     
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  6. Infopro

    Infopro cPanel Sr. Product Evangelist
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    Are you using an alternative port for exim you can give those users?
    Home » Service Configuration » Service Manager

    I seem to recall this being helpful.
     
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  7. albatroz

    albatroz Well-Known Member

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    What really happened is that the emails sent to my customers (by their own customers) started to bounce,
    because they were detected as spam.

     
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  8. mtindor

    mtindor Well-Known Member

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    I rarely ever get that problem. If I do, I advise the client that there is a reason why the sending mailserver is on a blacklist and that if that company/person really wants reliable email delivery they would need to contact their mail provider and sort out the reasons for the mailserver being listed.

    Admittedly, depending upon where you are in the world, and depending upon the countries that your clientele operate, Zen may be blocking some mail that you consider legitimate. In the states I find it to be pretty darned useful. You may not. You can always look in your mail logs to determine the IP address of the mailserver being blocked and then you can add that IP address into the proper area in the Exim Configuration Manager to exempt that host from RBL checking so that their mail goes through.

    M
     
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