Using Communigate Pro's ldap server with bugzilla

Hello,

We are finishing up the last of an email migration to Communigatepro email server from sus email server III and have run into an ldap issue. In the past , we had bugzilla using ldap for bugzilla username and password authentication. Now, we want to do the same with Communigate pro, but no matter what we try, we can't get bugzilla to do a suscessful query. If we enter username@email address on the bugzilla loging page, we get an access denied error. The Communigate logs show that bugzilla did an anonymous connection, but the search always returns 'null'.

Here is a snip form the Communigate logs showing the connection:
 

9:13:04.86 3 LDAP-00248([10.0.17.119]) request reading failed. Error Code=connection closed by peer
19:13:46.31 2 LDAP-00249([10.0.17.119]) search finished

If we try to connect from bugzilla with just user and password (not email address) the following is returned:

BIND failed: incorrect password or account name
19:16:58.80 3 LDAP-00255([10.0.17.119]) request reading failed. Error Code=connection closed by peer
19:17:04.86 2 LDAP-00256([10.0.17.119]) search finished

I am at a loss on what could be missing and am asking for ideas. Here is the snip from my bugzilla config where the ldap settings are specified:

$::param{'LDAPBaseDN'} = 'cn=somedomain.com';
$::param{'LDAPbinddn'} = 'uid';
$::param{'LDAPuidattribute'} = '';
$::param{'LDAPmailattribute'} = 'mail';
$::param{'LDAPserver'} = 'mail2.somedomain.com';

Somebody must have done this combination before. so any hints?.

Thanks all!