We run postfix 2.6.6 on a CentOS 6.3 server with a OpenLDAP 2.4.23 as a backend. Up until recently when a user would depart the agency we would just change their password and forward their email to their supervisor. However today we have had a user that has left that gets literally over a thousand "coupon" emails a day. We need to stop this user from receiving emails altogether.
Temporarily I have removed the users ldap account completely and it appears that emails are indeed bouncing with a error 550 5.1.1 like I want. Any idea how to accomplish this without totally removing the users account? -- Donny B.