I am setting up a list to be used for the distribution of a monthly announcements only, to about 2000 users.  No more than one message posted per month.  Now, in light of this, we're considering modifying the auto-delete values, changing Delay from 4 to 60 or 120, and Max from 100 down to a lower number, say 10.  The logic being that with fewer messages being sent, the fewer errors being received, and that a small Delay would not receive errors from more than one post.  Yet, for some reason I have this nagging doubt in the back of my head that this isn't the best of ideas.  Any thoughts on what problems might arise from this, or why it's aa bad idea?  Thanks!  

-Chris Gladish