LDAP

Mail delivery configuration with LDAP

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Last time I wrote about users’ authentication in LDAP directory to allow them receiving and sending e-mails. Now is time to configure Postfix for mail delivery to appropriate mailboxes.
If you compile Postfix themselves, you need to remember to add support for LDAP. My description is based on Ubuntu, so I only need to install postfix-ldap package:

$ sudo -i
# apt-get install postfix-ldap

This will add support for ldap: maps in Postfix.

Now we go to Postfix configuration:

# cd /etc/postfix
# vi main.cf

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Schema conversion – LDAP to LDIF

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The power of directory service is possibility to define your own object classes, attributes, rules and so on. It also allows grouping it in schemas, which you can add to LDAP configuration.

As for now most of schemas, which you can find in Internet is organized into blocks, which contains definitions of attributes and object classes. This looks like:

attribute type definition:


attributetype ( 1.3.6.1.4.1.32349.1.2.2.9 NAME 'accountStatus'
    DESC 'The status of a user account: active, disabled'
    EQUALITY caseIgnoreIA5Match
    SUBSTR caseIgnoreSubstringsMatch
    SYNTAX 1.3.6.1.4.1.1466.115.121.1.26
    SINGLE-VALUE )