I installed the latest version of ownCloud today and it works great.
Only one small problem has arisen and no logo is displayed in the email.
The server sends the mails with the internal IP address instead of the domain (Url).
As far as I was able, I searched through all files, unfortunately I did not find this setting. The domain is stored in the config as well as in the trusted domains.
Would be grateful for a tip!
I found out that this only happens when I log into the server locally.
So the current ip address has to be queried somewhere within a template and this is used instead of the server address.