Ok, i’m jumping in the fire !
Here, at IMAO SAS, we are using Nethserver for full and fonctionnal mail stack and some customs paranoid firewall rules.
I’m using NS at work. We are doing Aerial Data Acquisition.
Host computer has 4vCPU and 4Go of RAM. (virtual machine)
We are 40 peoples… so 40 emails boxes + lots of aliases + multidomains…
We have AD 2008 wich works as a file server and as a LDAP directory.
My goal was to use LDAP auth for the mail stack and the SOGo webmail.
Everything is working well.
I plan to use Nethserver in the futur to replace the AD. (if it’s possible because of Microsoft software we are using for pictures processing)