Installation with existing OpenLDAP, postfix, dovecot, spamassassin
I am currently using CentOS 4 with LDAP/postfix/dovecot/spamassassin configured for mailing service (including the LDAP for PAM). And I want to extend the server to support Calendar service and someone recommended me to have a look at Zimbra.
I am testing Zimbra in a sandbox, and found it excellent for our task. However, the installation of zimbra will replace postfix/LDAP/dovecot/spamassassin on the original system. It is ok for a sandbox but will be a quite hard work for our production server. I read the Zimbra wiki but only found instructions about using external authenication with another LDAP server. Anyway I just do not want to move the LDAP service to another server. And furthermore I want to keep the original configured services as more as possible. Especially the LDAP service will support the PAM and several other web applications, changing of this will be a nightmare for me.
I just want to ask are there any suggestions for my situation?
Is that possible to install two OpenLDAPs on one server?
Yep, you are right I can add user with scripts.
But more, am I be able to sync the addressbook when changing some other entries in my Auth LDAP? I mean when some user change his personal contact information in Zimbra, the changes will be reflect back to my Auth LDAP?
Some more on this topic. Could I change the LDAP port used by Zimbra, so that I can setup two LDAPs on the server?
And about postfix, is that possible to change the storage directory of postfix so each user can use mutt simply read mails in his homedir?