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I am noticing a potential problem on 2 former client machines. In the security log of the mail server (running on OS X Server 10.6), there are hundreds of entries:

[14/Mar/2011 11:59:38] LDAP: User xxxx<_at_> doesn't exist. Attempt from IP address

These repeat in groups of 2 or 3 every five minutes. There are two users, both from the same old domain. It is true, those users do not exist anymore on the server, nor does the domain.

I've spent way too much time trouble shooting this and here is what I have found:

2 different former client machines are doing this. They are both doing LDAP lookups for their respective old accounts on the server.

The LDAP lookups begin the moment the clients boot their machines - before the machine even gets to the log-in screen. And, the client does not have to be logged in to their user account on the machine - it just has to be on.

Both client machines are running OS X 10.6.

I've gone through console logs on both client machines. There are no instances of "kerio" or "ldap" anywhere in any logs on the client machines nor can I find anything helpful in any logs.

The moment either client shuts off their computer, the LDAP errors in the security log stop. The moment they turn their computer back on, the LDAP errors continue.

Both clients used Kerio Sync Connector at one point and both used Exchange set-up on Entourage as well.

All instances of Kerio software have been removed from the client machines - as have installations of Entourage. Searches of the machines for "kerio" come back empty.

What would Kerio install that would be doing these LDAP lookups??
Pavel Dobry (Kerio)

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Open the Directory Utility in Mac OS X and fix the LDAP account used for contact lookup on the server.

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Wow, that was annoyingly easy. Thanks!

Server installation:
Kerio Connect 7.1
OS X Server 10.5.8
Apple G4 X Serve
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