Error, When sending an email for a software license

I used ESXI Ovf to install univention ver 4.4 , after import and config when sending an email for software license show error :

Traceback (most recent call last):
File “/usr/lib/python2.7/dist-packages/univention/system_activation/”, line 101, in application
raise LdapLicenseFetchError(’{} exited with {}:\n{}’.format(’ '.join(cmd), proc.returncode, out))
LdapLicenseFetchError: /usr/bin/sudo /usr/bin/univention-ldapsearch -LLL objectClass=univentionLicense exited with 1:
/etc/machine.secret: No such file or directory

The error describes a missing file thats should have been created during the setup of the domain (the first system is always a DC Master/Primary). Looking at /var/log/univention/setup.log and /var/log/univention/join.log may show the cause but starting from scratch and looking for error messages during the setup would be a timesaving option.