Dovecot max concurrent connections from IP

NethServer Version: 7.9.2009
Module: email
hello everyone,
whatìs the correct way to modify the value “mail_max_userip_connections = 12” in dovecot.conf?

is it enough to modify the string and restart the process or the values will be overwrritten when doing an update?

In cockpit:

Appications → EMail (click on “Setting”) → Mailboxes (click on “Configure”, then “Advanced options”) → Max user connections per IP