also, zmsshkeygen still gives me the same error:
Generating public/private dsa key pair.
Your identification has been saved in /opt/zimbra/.ssh/zimbra_identity.
Your public key has been saved in /opt/zimbra/.ssh/zimbra_identity.pub.
The key fingerprint is:
ERROR: service.FAILURE (system failure: unable to lookup server by name: zimbra.infra.local message: [LDAP: error code 49 - Invalid Credentials]) (cause: javax.naming.AuthenticationException [LDAP: error code 49 - Invalid Credentials])
As I mentioned before, the localconfig.xml file suddenly was empty. In this file, the passwords are set for LDAP access. Now when I look at the error message above, it stats that the credentials are invalid. Could there be a relation here?