554 5.7.1 <smj at h.com>: Sender address rejected: Access denied;

[schmerold2 at gmail.com]

When sending mail from outside the local network, Kolab rejects the attempt:
[root at mail postfix]# cat /kolab/var/postfix/log/postfix.log | grep "Sep 
27 12:37"

Sep 27 12:37:04 mail.h.com <info> postfix/smtpd[21796]: connect from 
9-1-1-1.l.sbc.net[9.1.1.1]

Sep 27 12:37:04 mail.h.com <info> postfix/smtpd[21796]: NOQUEUE: reject: 
RCPT from 9-1-1-1.l.sbc.net[9.1.1.1]: 554 5.7.1 <smj at h.com>: Sender 
address rejected: Access denied; from=<smj at h.com> to=<john at h.com> 
proto=ESMTP helo=<[192.168.1.13]>


This was working fine until updating to Kolab 2.2.4

In main.cf, I have following:
smtpd_sender_restrictions = permit_mynetworks, permit_sasl_authenticated,
         check_policy_service unix:private/kolabpolicy


What am I missing?