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- #
- # Postfix Admin
- # by Mischa Peters <mischa at high5 dot net>
- # Copyright (c) 2002 - 2005 High5!
- # Licensed under GPL for more info check GPL-LICENSE.TXT
- #
-
- Please follow these steps if your mailserver is used as a backup MX for some
- (or all) of your domains.
-
- Note: The setup described in this file only checks the domain, not the full
- mail address.
- You should use "reject_unverified_recipient" in your postfix config or setup
- "relay_recipient_maps" with a list of valid mail adresses on the primary mx
- to avoid that your backup MX accepts mails for non-existing recipient adresses.
- Without this, your backup MX might become a backscatter source.
-
- 1. Modify main.cf
- -----------------
- In order for Postfix to use MySQL for relay_domains add the following
- to your main.cf
-
- relay_domains = proxy:mysql:/usr/local/etc/postfix/mysql_relay_domains_maps.cf
-
-
- 2. mysql_relay_domains_maps.cf
- ------------------------------
- You will need to put this into a text file for postfix to pickup.
-
- user = postfix
- password = password
- hosts = localhost
- dbname = postfix
- query = SELECT domain FROM domain WHERE domain = '%s' AND backupmx = '1'
-
-
- 3. Restart Postfix
- -------------------
- When you are done make sure to restart Postfix so the changes take effect.
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