Multiple domain setup -- Recipient address rejected: User unknown in local recipient table

[Timotheus Pokorra]

Hello Stelios,

> Yes I can help, no problem to write down the procedure in a very plain
> way.
> I have no clue however about git as I'm using svn many years now. Just
> send me a link where it says how to work with it in your repo and I'll
> be glad to contribute.

Please have a look at these instructions:

http://docs.kolab.org/developer-guide/documentation/
https://kolab.org/blog/timotheus-pokorra/2014/12/17/contributing-kolab-documentation-githubsphinx

You can actually edit the documentation online at Github, no need to 
download the repository locally if you don't want to build and see the 
output first yourself.
Just click the fork button on the project page, when you are logged into 
Github.
Then you can edit the files online in your fork, and then create a pull 
request.
https://help.github.com/articles/using-pull-requests/

Timotheus