The ‘Server status’ tab in the admin console shows an extra entry for “localhost”, or a server that you removed from the system some time ago (using the zmprov deleteServer command) with all services crossed out.

Resolution:

First get the output of zmloggerhostmap:

su zimbra
zmloggerhostmap
Zimbra Logger Service Hostname Map
---------------------    ---------------------
DNS Hostname             Zimbra Hostname
---------------------    ---------------------
mail.example.com          mail.example.com
mail                      mail.example.com
old.example.com           old.example.com
old                       old.example.com              

Remove the incorrect entry by running:

zmloggerhostmap -d  old.example.com old.example.com
zmloggerhostmap -d old old.example.com

Give the system a few minutes to update after you make the change.