configured the notifications with who to send list configured. we are receiving the notifications hwne the record is inserted or triggered to who to send receipient list after that we are getting same emails generated with random UAT mail address as subject undeliverable and when i open that and preview the emial i am getting below error:
hr_test_uat@mailadress.com
The recipient's mailbox is full and can't accept messages now.
554 5.2.2 mailbox full.
How caj i fix the issue
