Well to be honest blaxter I am not sure.
I have Openchange / SOGo and outlook working. It wouldn't work if there wasn't the DNS entries as my dns entries where created when applying the virtual mail domain and virtual domain.
So basically I have what you say but still the error. As I say I ignored it. Also I ignored it as quite frankly Http RPC doesn't make a lot of sense to me.
Its a legacy thing which is definately pre HTML5
Would anyone check there DNS hostname. For some reason I have two hostnames. I set myself up as zent1.zentyal.lan for the test. My DNS hostname has two entries.
zent1 with two ip's (internal and external) I have absolutely no idea why Zentyal creates a DNS entry on my external IP.
Anyway also I have zentyal.lan ? dunno and it has no IP set.
Must be when I added a virtual domain. In fact I wish when you add a virtual domain it wouldn't add DNS entries. Because of .co.uk rather than a .com tld the virtual domain dns entries get screwed everytime you add them. It actually makes it harder as you have to work out which entries and fix them.
domains can not be two characters long. when they are two characters they are a tld. You can tell that it irritates me that Zentyal thinks domain.co.uk is in a hostname.domain.tld format.