Windows 7: Server 2008 R2 / Exchange 2007 question

If I may break topic here, I'm looking for an answer on something. I currently have one server running Exchange 2007, on a Server 2008 R2 box. I have 27 users on the server, and we have never had limits on e-mail size...not for mailbox or attachment. I'm looking to start implementing both limits, but I'm not sure of how or the best way to do so. Any Exchange admins out there who can make suggestions? I don't know much about Exchange or PowerShell, so keep that in mind. I am the lone admin in this company, so admin rights to the box are not problem.

So, mailbox limits. These are enforced on the database itself and can be done on a per user basis.

Open Exchange Management Console, expand Server Configuration, Pick Mailbox, Find your mailbox database and right click Properties, click on Limits Tab. Set them here

For individual users: From Exchange Management Console, expand Recipient Configuration, click on Mailbox. Find the user in question. Go to their properties, Mailbox settings tab, select storage quotas, click on properties, uncheck box for "use database defaults", set manually per user.

Now, for maximum size limits, these are defined on the connectors. Open Exchange Management Console, expand Hub Transport, look through your receive connectors, properties, set Maximum Message size
on the General tab.


With respect to setting limits, I set a warning and then I prevent sending emails once limit is hit. You don't want to prevent somebody from ever receiving email. Once they hit limit and cannot send, they will clean themselves up.