Hi at all. Please excuse my question. but unfortunately i haven't found the right answer anywhere until now.
how can I forward emails (whole domain)*. Example: @xyz.ch for all email accounts to hans.meier@i_have_a_domain_in_smartermail.xyz
The domain name is nowhere published and will not be visible anywhere.
I want to prevent this message: Remote Server Error message: 'The recipient does not exist'

A) I have set up a domain aliases, but all emails should be forwarded there (@xyz.ch)
B) create a new domain in the SM and do the redirects there? if this domain will not only be used for forwarding in the future, but will also receive users.

C) I have to comply with the data protection regulations and cannot simply make domain B available to everyone with domain A.

Thank you for the help.