Office 365 – öffentliches Postfach

New-Mailbox -Name "ANZEIGENAME" -Alias MAILBOXNAME -Shared -primarysmtp <MAILBOXNAME@DOMAIN.DOM>
Add-MailboxPermission "MAILBOXNAME" -User "VERTEILER" -AccessRights FullAccess
Add-RecipientPermission "MAILBOXNAME"  -Trustee "VERTEILER" -AccessRights SendAs