I've been able to create curtom messages, this hasn't been a problem. it's some of the other things I was hoping to be able to change but not sure how to or if you even can:
1 - Can you customize the subject of the quota message, instead of just getting "Your Mailbox is Almost Full" or the other stock subjects?
2 - Can you change the From address that the quota message includes. It's stupid in that in Outlook/OWA it says it's from "Microsoft Outlook" and in an IMAP client (yes we have lots of these users), the From address shows up asMicrosoftExchange234bb..32charactersATmycompanyDOTcom; would be nice to just have all of them sent as postmaster(or whatever)@mycompany.com (a real friggin account). I've tried to use a Transport Rule to change the From in the header but it won't let me do that.
3 - Long shot, but any way to remove the html graph that gets displayed?
Problem we're having is that we get numerous phishing emails sent to our users, and most of them lately involve quota warnings threatening to close a users mailbox if they don't click the link and give their user names and passwords, which many of our users are happy to do, then the spammers get busy with those credentials sending out junk thru our servers.
Thanks for any feedback.