==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 0.9.8 OPENLDAP edition
- Linux/BSD distribution name and version: CentOS Linux release 7.5.1804
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): Active Directory
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Is there a way to validate only members of a distribution group to send email as Dgroup@domain.com?

I'm using iredmail + active directory. Authtentication and send/receive works correctly.
I have created a distribution group Dgroup@domain.com and members of this group receive email correctly.

I have configured a new identity 'Dgroup@domain.com' through roundcube for each group's member and they can correctly send email as Dgroup@domain.com

Now I would allow only members of this group to send email using this identity. At this moment any user can configure this identity and send email on behalf of this Dgroup@domain.com

Is there a way to validate only members of a distribution group to send email as Dgroup@domain.com?

Thank you all for your collaboration,
Cocco