How does one define 'the user community'? For your site it is probably the sum of the VOs whom you allow to use your resources. The security plan etc assumes that you can always contact a user through their VO - a DN doesn't give you contact details. If the issue seems common to many users of a VO then you can use the broadcast tool as others have suggested. John -----Original Message----- From: Testbed Support for GridPP member institutes [mailto:[log in to unmask]] On Behalf Of David Colling Sent: 04 December 2006 18:33 To: [log in to unmask] Subject: How to communicate with the users? Dear All, What communications channels do people use when communicating with the users? I ask because we have a very specific problem. We have some queues that have a 10 minute time limit. These are useful for various things. However, a lot of people send jobs which they know are going to run for a couple of hours say with no time requirements. These often end up in our 10 minute queue where, after 10 minutes, they die. Now, if we see a specific user doing this a lot (every time it does this it sends us an email so we do see it when this is happening a lot) we can contact them and explain. But is there a general way of communicating with the user community? All the best, david