we have a Exchange 2007 server, with many Dist Groups
there is one in particular Mail-Enabled Universal Distribution Group
that when staff sent a email to this group it has 100 external users and a few internal
a few of the external users had there out of office notifications on, so then what happened everyone in the dist group was getting these notifications...
is there something I did wrong in creating these groups?
some additional security settings that need to be done? can one prevent others from replying to dist groups?