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iGEL
Asked: 2011-05-09 02:01:33 +0800 CST

Postfix: Custom Reject Message for Certain Email Adresses

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I would like to reject mails to a certain address with a custom message. Mails to other non existing addresses should be unchanged. How can I do that? I'm using Postfix 2.7.0 on Ubuntu 10.4.

Background: My websites sends mails to my users, and so far, my personal address is used as the sender. I would like to change this to a noreply@... address, but since the users reply quite often to these emails, I would like to send them a helpful reject message.

Thanks!

postfix email-bounces

1 Answers

  1. Best Answer

    Create a custom_replies map (i.e. /etc/postfix/custom_replies) with the following contents:

    [email protected] REJECT Like I said, NOREPLY

    Run sudo postmap /etc/postfix/custom_replies.

    Edit /etc/postfix/main.cf and put the following as the first check of the smtpd_recipient_restrictions:

    check_recipient_access hash:/etc/postfix/custom_replies,

    Then issue a sudo postfix reload.

    Try sending email to [email protected]:

    $ telnet localhost 25
Trying ::1...
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mydomain.com ESMTP Postfix (Ubuntu)
HELO localhost
250 mydomain.com
MAIL FROM: <[email protected]>
250 2.1.0 Ok
RCPT TO: <[email protected]>
554 5.7.1 <[email protected]>: Recipient address rejected: Like I said, NOREPLY
quit
221 2.0.0 Bye
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