Story:
Today I encounter a problem with the OpenDkim plugin. The zone files in /var/cache/bind/ where empty so DNS was not solving the domains.
I deactivate OpenDkim, information appeared in the files (that's the moment when I discovered that Opendkim is causing the problem) and than activated it again, fies where still empty. I activate OpenDkim for a customer (domain) and DNS information apeared in those files.
Info:
OS: Ubuntu 14.04 LTS
I-mscp version: 1.3.0
OpenDkim Plugin version: 1.1.1
Other plugins used: ClamAV, SpamAssassin, Roundcube Plugins.
This is all information I got in this moment, following the rules. If you need more I'll be happy to provide them.
Hope it helps.