IMO, there is a solution for every need. In the case of multi tenancy, NethServer is not the solution and if you need this, find a solution that does support this.
If you need to cut a piece of wood, you don’t use a screwdriver. Use the tools that are designed for the task.
Having a system where the same email is forwarded to another domain mail can be counter intuitive, because if one of the email domains receiveds more emails than the other then the small account is disadvantaged.
Again, for the same organization, having multiple server for different email domains in some way would not make sense.
This is true, and I totally agree with that. every solution has its tools.
@mvh: that is what is possible now with either Samba4 AD account provider and LDAP. In fact you still have 1 user domain (in your example local.lan
There you create users and you assign them alias email addresses with other MAIL domains,
(Note the difference between a user domain and a mail domain)
I use this for my personal mailserver too. I have about 10 different domains registered. I actively use 3 of them as maildomains. I have created several Alias email adresses for each maildomain for my personal account.
to avoid any kind of trouble ill have to test that on a separate testing server with some 2 to 3 domains, which will atleast enable me to see how it functions on a real case before deploying to my main server.
but I wish one could be able to create user @aaaaaa.tld and firstname.lastname@example.org
instead of just aliases
A few month ago I did some tests because I also wanted a multi tenant solution with Nethserver but to be honest it’s to complex to maintain. There are possibilities in WebTop to use it as a multi tenant solution but you will ran into trouble if you want to use AD and so on. I myself found the solution to install multiple Nethserver servers in Proxmox. Nethserver uses far less system resources than Windows and Exchange.
All tests went well but I did not test the antivirus or the spam filter because I use a Sophos XG appliance. I have tested Webtop, OwnCloud, LDAP and Active Directory. I tested an iPad and an iPhone with email, calendar and contacts and ActiveSync and I tested Webtop with TBSync and Mozilla Thunderbird on a laptop with email, calendar and contacts and it all worked properly.
I have encountered some problems finding the right time zone settings, especially with TBSync and Thunderbird, but that also works. I think Nethserver can be a worthy replacement for Microsoft SBS if users are willing to give up MS Outlook. Webtop with OwnCloud also works fine in a browser and then Thunderbird is not necessary