Where to find error messages?

["Marcum, Bob" <Bob.Marcum@telecheck.com>]

I get the following error message from my running ldap instance:
<= bdb_equality_candidatges: (objectClass) index param failed (18)

It doesn't really seem to have much effect on the ldap operations, but I
would like to know what the message is telling me.  Mostly, I would like
to know where to look and how to decode such ldap messages (without
having to ask every time :).

Thanks for pointing me in the right direction.


-----------------------------------------
The information in this message may be proprietary and/or
confidential, and protected from disclosure.  If the reader of this
message is not the intended recipient, or an employee or agent
responsible for delivering this message to the intended recipient,
you are hereby notified that any dissemination, distribution or
copying of this communication is strictly prohibited. If you have
received this communication in error, please notify First Data
immediately by replying to this message and deleting it from your
computer.