Need some help.

I am have a problem with a ZLM secondary server certificate. The edirectory certificates expired a few days ago. We have renewed the certificates. But now we are getting an error message in the loader-messages log file: “No trusted certificate found” We have tried TID 7002147. Everything go fine but when we restart ZLM we still see the error. 1 primary server and 3 secondary servers. The primary and 2 secondary servers are working fine. Problem only on one secondary server.

ZLM 7.2 IR4
edirectory 8.8.3
Primary server SLES 11
Secondary server SLES 10

Any help will be highly appreciated.