This one crosses over between sbs and exchange:
Exchange under SBS has a 16gb db limit. When it hits this it generates an error in the event log which is picked up by the sbs monitoring tools the next day and mailed out...of course since exchange shuts down after writing the eventlog error it doesn't send anything.
Surely exchange could generate an email to the site administrator as it nears this limit?
The first time I came across this limit due to a clients system just closing down with no alerts, it just stopped.
As exchange nears its limit it generates eventlog warnings which the sbs monitors don't pick up. Ideally it should generate errors so that eventlog monitors will pick them up AND sbs should generate an email like it does for low disk space.
Ian