Work Smart, Not Hard
drfugazi 
I wrote before about schema conversion to LDIF format and how to add schemas offline by uploading them to config/schema directory in OpenDJ. Now I will describe how to extend schema online, without restart LDAP server. Most if not all LDAP servers now have possibility to modify configuration and schemas due LDIF files and ldapmodify tool. Let’s prepare our LDIF file, attributes first:
# cat us-newattrs.ldif
Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways. It provides a number of utilities including a flexible and scalable multi-threaded daemon, a command line scanner and advanced tool for automatic database updates. The core of the package is an anti-virus engine available in a form of shared library.
The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. The project is managed by a worldwide community of volunteers that use the Internet to … Read more
Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with security primarily in mind. Dovecot is an excellent choice for both small and large installations. It’s fast, simple to set up, requires no special administration and it uses very little memory.
Gpg4win (GNU Privacy Guard for Windows) is an encryption software for files and emails.
Gpg4win enables users to securely transport emails and files with the help of encryption and digital signatures. Encryption protects the contents against an unwanted party reading it. Digital signatures make sure that it was not modified and comes from a specific sender.
Sometimes you need to encrypt some files or messages to prevent accessing them by unathorized persons. There are several standards and software for this purpose, but the most popular standard that adopted on the Internet is PGP. I will show you how to install and use GNU implementation, which is known as GNU Privacy Guard … Read more
Sometimes you need to combine two or more LDAP directories with same suffixes to one directory or you just need to have a proxy. My first attempts to combine two OpenLDAP directories was to make replication from two different sources. This solution however has some disadvantages. First of all: to have syncprov replication your environment must be uniform, this means all source servers and proxy needs to be OpenLDAP. Second: I observed that this is not so stable, because of mentioned earlier issues with OpenLDAP replication.
Sometimes you need to set some attributes as unique, for example: if LDAP contains system users, then uid attribute shouldn’t repeat in whole system.
OpenDJ is equipped with proper plugin, but it’s not enabled by default. In case of mail system, attribute mail should be unique. Here we don’t have ready to use plugin, but we can easily create it basing on UID Unique Attribute and this description and this one.
But I didn’t make this post to send you to other pages. I would like to show you how to add Plugin with dsconfig and how to copy it to replica with LDIF export/import.
This is a description of upgrade Sony Ericsson Xperia X10 Mini Pro to newest available for now version of Cyanogen Froyo system developed by XDA Developers.
I will perform update from CM 5.0 Final Release, because I have already done upgrade to CM 5.0 from the factory supplied X10 Mini Pro Android v 2.1. The fact is that the first update conferred the most trouble, because you need to ‘root’ your smartphone, install xRecovery software, and then go for upgrade. However, for now I describe the process of upgrading from 5.0 to 6.01.
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