Server config
The Server Config page defines the SMTP endpoint the application uses to send messages it generates itself - autoreplies from Autoresponder rules, and messages from the Forward message and New message policy rule actions.

SMTP host
Hostname or IP address of the SMTP server used for sending. On a typical single-server Zimbra installation this is localhost.
SMTP port
Port of the SMTP server. The default is 25.
Click Save Settings to apply the changes.
note
The install defaults (localhost:25) can also be overridden in /opt/msh-zr/etc/config.cf, but the values saved on this page take precedence.