I have migrated an old ironport wsa to new s670 appliance, the configuration is same. It worked fine for about a month but now it is blocking legitimate users randomly.
It is happening frequently and there is no pattern for this issue, it's totally random and non predictable. Suddenly it will block the user and after 5 minutes it starts working again. After few hours some other user will fave the issue.
Is there anyone here who faced similar issue or anyone know about any bug in this OS version which can be fixed with version upgrade.
Thanks