This allows the information found in the 'mail' attribute on your Active Directory tree to be drawn down into a postfix alias formatted file.

Name: Postfix
HomePage: http://www.postfix.org/
Function: (message transfer agent) postfix is program responsible for receiving incoming e-mails and delivering the messages to individual users

Name: PAM
HomePage: http://www.kernel.org/pub/linux/libs/pam/
Function: Linux-PAM (Pluggable Authentication Modules for Linux)

1. Setup postfix as explained in one of my other installation guides

2. Download the following script.

cd /etc/postfix/

wget http://www.opensourcehowto.org/uploads/scripts/getadalias_pl.txt

3. Edit the file to suit your network

nano /etc/postfix/getadalias_pl.txt

4. Make cron run this script every 10 minutes, or whenever you want it to.

crontab -e

5. then place the following information into the file

6. Change your postfix main.cf file to look like this

nano /etc/postfix/main.cf

7.This requires Net::LDAP to be installed.  To install Net::LDAP, at a shell type

perl -MCPAN -e shell

Once Net::LDAP is installed then type

install Net::LDAP

8. This script searches your active directory database to returns with the sAMAccountName and mail attribute, strips out the unnecessary '@example.com' and then places them in the file that you choose when editing the script (eg: /etc/postfix/ldap-aliases.cf) in the format of postfix aliases (aliases: username). You will still need to have the users on the system that mach the users in the alias file, so I suggest you edit your pop3/imap pam module and use either the ldap client or winbind to Authenticate against Active Directory so you have the same username/password.

BookMarking:

cell1

cell3

cell4

Trouble Shooting:

Go to the wiki page

Go to the 'Contact Us ' Forum

Go to the how-to's Support Forum

External Links:

http://www.postfix.org/

http://www.kernel.org/pub/linux/libs/pam/