Hi Expert,
i created a Universal Distribution List "u.personale@blablabla.it" (from administrative console of exchange 2016).
The group works well if i send it an email from an internal address @blablabla.it ; but if I send an email from an external address (for example @gmail.com or @outlook.it), I receive, in my mail gmail or outlook account, a response of error message after few seconds:
"Object: Delivery Status Notification (Failure)
Address not found
Your message has not been delivered to u.personale@blablabla.it because the address does not exist or cannot receive emails.
The remote server response is: 550 5.1.1 User Unknown"
Other Distribution Groups, created previously on Exchange 2010, work fine and receive email from internal and external address.
There's something wrong, but I can't understand where is the uncorrect configuration; please coul tou help me?
Thank you :)
