No Milter is listening on port 7026

Hello.

I tried to check my Carbonio installation with sending mail to myself, but got an error in the web interface. When i checked the logs i found this

Feb 21 08:04:46 test-mail-01 postfix/smtpd[702979]: connect from localhost[127.0.0.1]
Feb 21 08:04:46 test-mail-01 postfix/smtpd[702979]: warning: connect to Milter service inet:127.0.0.1:7026: Connection refused
Feb 21 08:04:46 test-mail-01 postfix/smtpd[702979]: NOQUEUE: milter-reject: CONNECT from localhost[127.0.0.1]: 451 4.7.1 Service unavailable - try again later; proto=SMTP

indeed no service is listening at port tcp/7026

Data were migrated from old zimbra installation with the help of this article https://community.zextras.com/how-to-use-imapsync-to-migrate-zimbra-to-carbonio-carbonio-ce/

Here is some parameters in my Carbonio installlation regarding to Milter

zextras@test-mail-01:~$ zmcontrol -v
Carbonio Release 24.1.0

zmcontrol status -v
Host test-mail-01.carbonio.local
	antivirus               Stopped
		zmfreshclamctl is not running
	directory-server        Running
	mailbox                 Running
	memcached               Running
	mta                     Running
	proxy                   Running
	service webapp          Running
	service-discover        Running
	stats                   Running
	config service          Running

zimbraServiceEnabled: antivirus
zimbraServiceEnabled: memcached
zimbraServiceEnabled: stats
zimbraServiceEnabled: service
zimbraServiceEnabled: zimbra
zimbraServiceEnabled: zimbraAdmin
zimbraServiceEnabled: zimlet
zimbraServiceEnabled: mailbox
zimbraServiceEnabled: mta
zimbraServiceEnabled: directory-server
zimbraServiceEnabled: proxy
zimbraServiceEnabled: service-discover

zimbraMilterBindPort: 7026
zimbraMilterMaxConnections: 20000
zimbraMilterNumThreads: 100
zimbraMilterServerEnabled: TRUE

Any help appreciated, thanks