The first thing to do is always use the su command with the hyphen, like this:
It's important to set the environment using that command. Next, the 'zmprov sp' command only sets the password for an Admin user i.e. a user that's logging in to the Admin UI as an Administrator.
Have you checked to see if the certificates are expired on your server? If you have an expired Are all thee services up and running:
Code:
su - zimbra
zmcontrol status
Has this problem started since you've updated the certificate as mentioned in your earlier post? Was this a change from a self-signed certificate to the purchased certificate (if not, why the new certificate)?