/var is at 100% usage, even after deleting files
I had a problem where log files grew very big on /var. My usage was at 100% per 'df -h'. I removed all the big log files, but it's still showing as 100% usage. If I run 'du -sh /var' , it's only 600MB now, but it's showing as 6.5GB on the output of the 'df -h' command. It's mounted as it's own partition.
I need it to realize only 600MB are being used without actually remounting the /var partition, since people are using the server. Until I do this, postfix SMTP will not receive emails, saying there's not space left on device.
Any help would be appreciated.