Hello all!
We have the Exchange 2013 with CU10.
Today I have created a transportrule like following:
If an email was sent to a member of the group "ABCD",
and it's from outside of the organization.
THEN reject the message with the text:
"You're not allowed to send to this Mailbox", with Status code. 5.7.1
So I have send a test-email to one of the mailboxes, which are in the group "ABCD" and I'm getting the NDR, but WITHOUT the text "You're not allowed to send to this Mailbox"
Then I have also changed it to "inside the organization" and send an email to a Mailbox of the group "ABCD" and there it was working correctly. I got a NDR with the text "You're not allowed to send to this Mailbox".
Did somebody had already this issue? Is this maybe a bug? Can you help us solving it?
Thanks!
BR,
Strahinja