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Ian Chilvers
Asked: 2013-11-02 09:24:02 +0800 CST

Configure postfix to temporary reject all incoming email with a 451

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I need to configure a Postfix server to temporary reject all (SMTP) incoming email with a "451 Try again later"

Any ideas?

Regards

Ian

postfix

1 Answers

  1. Best Answer

    postconf | grep reject lists a number of configuration directives containing reject.

    I´d probably just set 

    unknown_local_recipient_reject_code = 451
unknown_virtual_alias_reject_code = 451
unknown_virtual_mailbox_reject_code = 451

    and remove the domains in question from mydestination and virtual_mailbox_domains.

    So basically tell postfix to not accept mail and to reject it using 451s.

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