data101,

This can be acomplished in postfix. There is a nice article on howtoforge that explains the procedure in detail. See the link below.

How To Whitelist Hosts/IP Addresses In Postfix |...

Artemide,

Take a look at the split domain page on the wiki

Split Domain - Zimbra :: Wiki

Though, in my opinion it would be better to migrate to Zimbra and set up a robust/redundant...

Zimbra 8 does not come with a greek translation, but it appears the community has developed it. Take a look at the following links.

Translations - Zimbra :: Wiki

SourceForge.net Repository -...

isource,

Also, I have started an Install Guide for CentOS that might help.

CentOS 6.3 and Zimbra 8 Install Guide - Zimbra :: Wiki

Greg

Alexander,

What is missing is the actual configs of both machines. i.e. slapd.conf etc... In order to understand which part is failing when starting LDAP, you need to know how they are both...