SAP Inbox - Sending to external address
I'm sending a message from SAP Inbox via SBWP to a user ID. In SOST the status of the message stays RED indicating it did not go through. I have two users who are not receiving and one that is receiving. The one that is receiving in SOST has status of green indicating that the message went through. All three users have the same attributes in the email address field in SU01.
Any ideas why this is happening? Since there are no difference in the setup of all three users why is one receiving and the other not receiving?
Below is the error Iu2019m getting for the two user IDs not receiving.
Internal error: Recipient address not found. Return code:80