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Just thought I'd pass this along. This is the second time I've been bitten in the butt by this..

LDAP users unable to authenticate. The Kerio logs just show "Invalid password". When you test the ActiveDirectory connection via the Admin Console the test completes properly.

This just tells you that ActiveDirectory (the LDAP portion) is working, it doesn't verify user authentication.

If there is a time difference between the ActiveDirectory server and your Kerio server kerberos authentication will fail.

It turns out our ActiveDirectory server was off by five minutes.. That's all it took.

If you suspect you might have this problem you can verify it by running the following :

kinit user<_a.t_>ADDOMAIN.COM 

If kerberos authentication is failing because of a drift you should receive a message like this:

kinit(v5): Clock skew too great while getting initial credentials

The solution is to correct the system date/time (preferably with NTP on all of your servers).

Just thought I'd pass this along this troubleshooting tidbit.



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