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How does mailman manage outgoing messages queue?

Discussion in 'E-mail Discussion' started by edwio, Nov 24, 2017.

  1. edwio

    edwio Registered

    Nov 24, 2017
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    I've created a new mailing list, via Mailman.

    In this mailing list i have almost 1.3K members, and i just wanted to know how exactly Mailman manage his outgoing messages queue..

    Meaning, i read in the documentation about this option: Max hourly emails per domain
    (Home >> Server Configuration >> Tweak Settings) in cPanel.

    So let's say for example, that i set the limit to: 300 (Max hourly emails per domain).

    When i'm actually send a post/email to my mailing list,
    Does mailman or some other program,
    Automatically send every hour 300 emails until she covers all my 1.3K members in the list?

    Or do i need to Manually send 300 emails to 300 different members every hour, until i cover all my 1.3K members in the list?

    I don't want to slow my website (Shared Hosting) performance by mistake...

    My cPanel version is: 68.0 (build 16)
    My Mailman version is: v2.1.23

  2. cPanelMichael

    cPanelMichael Technical Support Community Manager Staff Member

    Apr 11, 2011
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    You won't need to manually send out the remaining emails (the remaining emails are either queued for future delivery or discarded), however there are a couple of settings under the "Mail" tab in "WHM >> Tweak Settings" that you should be aware of:

    1. Count mailman deliveries towards a domain’s Max hourly emails:

    If enabled, messages sent from a mailing list owned by a user’s domain will be counted towards the maximum number of emails the domain is permitted to send per hour.

    2. The percentage of email messages (above the account’s hourly maximum) to queue and retry for delivery:

    When an account exceeds the maximum number of emails it is allowed to send per hour, by default, any additional messages are queued for delivery and sent in the next hour. This setting allows you to limit the number of messages that will be queued by the system. For example, if you set this value to 125%, once the account reaches its hourly limit, Exim will queue any additional messages, up to 125% of the Max hourly emails per domain value. Once the account reaches 125% of the Max hourly emails per domain value, any additional outgoing messages are discarded.

    Let us know if you'd like any additional clarification on how the email sending limit functions.

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