Those are just warning messages. To speed of your query in the domain controller, you'll want to be as specific as possible on what baseDN to start your search on.

For Exchange, you'll want something like:

ou=employees,dc=company,dc=com


Also, for Exchange 2003 and higher, you'll want to implement to use the Global Catalog feature and use port 3268 as it's quicker than the default of 389.

Hello,

LDAP queries from our C350 (v 6.1.0-306) to a Windows 2003 DC creates "could not follow continuation" entries in the ldap_logs.

BaseDN: dc=firm,dc=local
Port: 389/tcp

tail ldap_logs
---------------------------------------------------
Mon Sep 29 09:27:41 2008 Debug: LDAP: Query (|(mail=joe.user@mycompany.com)(proxyAddresses=smtp:joe.user@mycompany.com)) could not follow continuation: ldap://ForestDnsZones.firm.local/DC=ForestDnsZones,DC=firm,DC=local

Mon Sep 29 09:27:41 2008 Debug: LDAP: Query (|(mail=joe.user@mycompany.com)(proxyAddresses=smtp:joe.user@mycompany.com)) could not follow continuation: ldap://DomainDnsZones.firm.local/DC=DomainDnsZones,DC=firm,DC=local

Mon Sep 29 09:27:41 2008 Debug: LDAP: Query (|(mail=joe.user@mycompany.com)(proxyAddresses=smtp:joe.user@mycompany.com)) could not follow continuation: ldap://firm.local/CN=Configuration,DC=firm,DC=local

Mon Sep 29 09:27:41 2008 Debug: LDAP: (accept) Query (|(mail=joe.user@mycompany.com)(proxyAddresses=smtp:joe.user@mycompany.com)) lookup success, (10.31.128.215:389) returned 1 results
--------------------------------------------------

Does anyone know what this means ? If I take a more specific BaseDN the "continuation" message disappears.

Regards,
tommes