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OWA giving "HTTP/1.1 503 Service Unavailable" after running out of disk space.

The disk volume holding our Exchange server ran out of space today, causing Exchange to stop functioning, with attempts to access OWA resulting in "HTTP/1.1 503 Service Unavailable".
I stopped all the Exchange services, compressed the volume to free space (more than 9 gig), and then restarted the server and the services, however, I am still getting the 503 error.

Please help!

1 Solution
It is a very bad idea to compress a volume that contains Exchange databases.
Add more disks to your volume or move the databases to a drive with enough space.
Is Exchange itself running correctly? Are the services running?
There is a good chance that you might have killed your Exchange installation by running compression. You need to look at why the server ran out of space.
Usual reasons are badmail folder taking up a lot of space or the backups aren't completing correctly and the logs aren't being flushed correctly. Both of these can quickly eat space, but are easily addressed.

You will need to clear the problem that has caused the space to be used then remove the compression.

smokysteveAuthor Commented:
Check the circular logging option  in the storage group area of System Manager.  We ran out of space on an older server and it was because of the logs.
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