Since the update I no longer know how to access the webmail.
Via port 8443 no worries, via port 443, here is the error message:
ERR_EMPTY_RESPONSE
For the message below we forget, it is functional:
warning: /opt/zimbra/common/conf/main.cf, line 819: overriding earlier entry: smtpd_milters=inet:localhost:11332
Thank you for your help
Mz