Please allow to send mail with alias
There is a workaround. I'm in contact with an microsoft supporter. He says ... there is a official supportet way, but we where not able to set it up properly yet. It is to create a distribution group, and make then thousand things ...
But, it seems to be a problem, because of the displayed name, which must be different. So if my name is Henry Smith, I have to be Henry Smith1 and Henry Smith2. So what ....?
Why you are not allowing, simply to send mail in the name of an alias? Setup the user, create the new alias ... ready ... thats all.
The workaround (which should work, but cant get it ready until now) is ugly and very, very inconvinient.