[Mailman-Users] message not showing in Archives

[Dr. Scott S. Jones]

Dear List:

I sent a message to one of my lists today, and after receipt of the mail, I
checked the Archives via the GUI. Despite a few hours, after sending and
receiving, the item still has not shown up in the Archives..nothing shows
for the month of May. 

What causes an item to be archived and to show up, and how long should  it
normally take to be there? 

Please advise. 

Scott