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Phrogz
Asked: 2017-09-08 17:27:36 +0800 CST

Blacklist recipient email addresses

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I have a mail server on Ubuntu using Postfix and Dovecot and SpamAssassin. In Postfix I am using "plus addressing" via the recipient_delimiter option. So, for example [email protected] and [email protected] are valid and actually deliver to the foo account.

Some of those addresses have gotten scraped/sold and are now heavy sources of spam (such as [email protected]). I'd like to block all email addressed to a specific list of addresses.

I edited /etc/spamassassin/local.cf to:

  1. Uncomment this line: shortcircuit USER_IN_BLACKLIST_TO on
  2. Add this line (above the shortcircuit): blacklist_to [email protected]

After I restarted spamassassin (/etc/init.d/spamassassin restart) emails sent to the blacklisted address still come through unharmed.

How can I hard-nuke these emails so I never see them?

postfix

1 Answers

  1. Use this line to blacklist emails sent directly to [email protected]:

    blacklist_to [email protected]

    And add the following line to blacklist emails sent to any foo alias (with "_" as recipient_delimiter):

    blacklist_to foo_*@me.com
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