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Accepted
Julien
Asked: 2009-12-11 04:28:15 +0800 CST

How do I temporarily suspend mail delivery to a specific domain (non-local) with Postfix?

  • 772

Using Postfix and custom transports I can manage delivery speeds depending on the recipient's domain. (For example, I send max one message per second to *@hotmail.com)

I also use similar rules to block bad destinations (htmail.com is blocked right away, avoiding many loops in the queue).

However, I'd like to temporarily suspend mail delivery to a destination for 24 or 48 hours (mails to *@gmail.com suspended, everything else delivered). Messages would queue up during this time, and would be delivered only when I want by changing the config.

Does anyone know how to do that ?

Thanks

email

3 Answers

  1. Best Answer

    Put messages in a HOLD state

    /etc/postfix/main.cf:

    smtpd_recipient_restrictions = 
    ...
    check_recipient_access hash:/etc/postfix/hold

    /etc/postfix/hold:

    gmail.com        HOLD
blah.com         HOLD

    Make sure you run postmap hash:/etc/postfix/hold whenever you update the file.

    If you want to release all messages on hold, use postsuper:

    # postsuper -H ALL
    • 24

  2. You can do this with a transport map:

    gmail.com defer:

    • 3

  3. To put on hold for specific domain:

    postqueue -p | awk 'BEGIN { RS = "" } { if ($7 == "[email protected]" ) print $1 }' | tr -d '!*' | postsuper -h -

    To release for a specific domain:

    postqueue -p | awk 'BEGIN { RS = "" } { if ($7 == "[email protected]" ) print $1 }' | tr -d '!*' | postsuper -H -
    • 0