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Exceeded the max defers and email blacklist solution?

Discussion in 'E-mail Discussions' started by atlantis21, May 3, 2014.

  1. atlantis21

    atlantis21 Well-Known Member

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    Hi,

    I need help with security setting on server.
    Some users have this errors when sending mails:

    1) MAX DEFERS ERROR
    Code:
    Domain xxxxxxxx.xxx has exceeded the max defers and
     failures per hour (5/5 (62%)) allowed. Message discarded.
    On server this option was set:
    Max hourly emails per domain: 200
    The percentage of email messages: 125%
    Maximum percentage of failed or deferred messages a domain may send per hour: Unlimited
    Account package has from 50 - 100 messages per hour

    I think, solution for this is to increase number of mails per hour?


    3) BLACKLIST
    Code:
    host smtp1.xxxx.xx [xx.xxx.xxx.xxx]: 550 5.7.1 Your IP address
    xx.xxx.xxx.xxx has been found on DNS Block list b.barracudacentral.org and was
    therefore refused. For more information see:
        http://www.barracudacentral.org/lookups/ip-reputation
    I dont know what to do with that...
    In WHM settings alter outgouing port is 26.
    And by default users must check "user requre autentification" on mail software.
    But users doesn't do that and I have problem. 70% users leave default setings on mail software and call me after get in blacklist..

    SpamAssassin is disabled by default
    MailScanner is not installed, but I thinking to install that.

    So what is better SpamAssassin or MailScanner?
    What your recomendation?

    And what is best config for Exim Configuration Manager to avoid spam andblacklist?
     
  2. vanessa

    vanessa Well-Known Member
    PartnerNOC

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  3. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

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    There is not one set option that's going to prevent all outgoing SPAM, but the following document provides some useful information:

    cPanel - Prevent Email Abuse

    Thank you.
     
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