restrict users to internal email only

[Thomas Jensch]

Hello,

* Lennart <lennart at ackermans.ch> [2022-03-27T14:21+0200]:


> This can be done with Kolab's recipient access list, which I think is 
> undocumented. You can find it in kolab-webadmin in a user's "Configuration".

Thank you very much! Works like expected.
I stumbled upon that option, too, but since I didnt find any info on the
purpose, I eventually gave up and focused on other ideas.

Thanks again!
Thomas