I've setup different sets of groups to for our users to email to.  For example, I've setup a group like middleschoolstaff@mydomain.edu and then put different users in this group.  The problem is, whenever I delete a user, and someone sends an email to middleschoolstaff@mydomain.com, the server still tries to send an email to that user....and therefore they get a bouceback.  Anyone else have this problem...or is there another way I should be doing emails to groups.  Thanks for any info.  By the way....using 5.5 update 2.