my exchange server is rapidly running out of space, due to the transaction logs not being cleared or flushed. After reading about the topic a little bit it would seem to me that it's the job of my backup software to do this. For various reasons (too much data, a few corrupt files, some incorrect settings in the backup job) I haven't had a 'successful' backup in a long long time - until last night.
After last night's succesful backup however I've still found that the logs haven't changed any.
The backup that I'm doing is only of selected mailboxes, which I'm guessing is precisely the reason it hasn't removed or flushed any of the logs (not knowing anything about transaction logs, I didn't know if backing up SOME of the mailboxes would remove SOME of the logs.) So my gut feeling is to select all of the mailboxes and see whether this solves things.
Normally I'd be quite happy to experiment with this until I got it right - however each backup takes around 12 hours I'm running out of time (and space!) - so I'm posting here as hopefully someone will be able to give me some pointers.
Thanks very much