Got it working, with this post as an example:
http://www.mail-archive.com/[email protected]/msg05688.html
For the record:
<key>SOGoUserSources</key>
<array>
<dict>
<key>CNFieldName</key>
<string>cn</string>
<key>IDFieldName</key>
<string>cn</string>
became:
<key>SOGoUserSources</key>
<array>
<dict>
<key>ModulesConstraints</key>
<dict>
<key>Calendar</key>
<dict>
<key>objectclass</key>
<string>nonExistingClass</string>
</dict>
</dict>
<key>CNFieldName</key>
<string>cn</string>
...
Regards,
MJ
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