I have a dedicated server run by cent OS with WHM.
there is a specific domain which was sending spame, i tried all the different ways but was not able to solve them, then i completely deleted that account and re create that again, now domain has stop sending spam but there is still one account which is System and sends unrouteable message to an account firstname.lastname@example.org. x was the admin account of domain xx which was deleted after sending the spame.
do you have any solution how to stop this system account to stop sending these untroubled messages?
the screen shot is attached.