I’ve one problem, I have one mail domain (main domain on nethserver installation) and some alias domain. I have configured one alias to be send to one local account but when I want to send mail with this account I could not make it send mail from the domain alias, if I configure the SOGo send from it always add on behalf of in the send from. Example :
main domain xyz.com
alias domain abc.com
one user firstname.lastname@example.org
Then for receiving mail no problem .