Help with getting email working: kolab-server-2.2.1-beta-1

[Harkin Banks]

I just installed Kolab on a server with a fresh install of CentOS 5.2.  I got the source rpm's from 
http://ftp.belnet.be/packages/kolab/server/beta/kolab-server-2.2.1-beta-1/

.  I did the install according to 
http://wiki.kolab.org/index.php/Kolab2_Installation_-_Source

Everything looks great, except that email is not quite working correctly.  I created two users on the local domain (user1 at domain.com, user2 at domain.com) and sent each an email from the other via Horde.  In each case the email showed up in the senders Sent box, but did not appear in the Inbox of the recipient.  

Subsequent to this, after working with the system for an hour or so, I am getting the following when I try to log in (with any of the three accounts I've created (one admin, two users)):  
Failed identifying the UID of the Kolab user harkin at domain.com. Error was: Unable to bind to the LDAP server as cn=nobody,cn=internal,dc=domain,dc=com!

I hope by mentioning the second issue (with LDAP) I'm not creating additional confusion, but I thought they might be related.  

Any suggestions are appreciated.  Thank you.  
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