A user leaving the organization is something that all our customers have to find a method of dealing with. There is no official guidance on the best way to deal with this because it varies depen...
Updated Jul 01, 2019
Version 2.0
Blog Post
Also, instead of disabling the account, we use the "Account Expires" option. Mail still flows, no 9548 errors, plus it gives us a date when the account was disabled.