ICAP queued transactions occur when the connections in the connection pool between the ProxySG and the ICAP server are all busy processing requests. This can be because of load or a delay in scanning on the ICAP server.
Anti-virus scanning can potentially increase request / response latency as said traffic is now being scanned for malicious content while also being evaluated by the current proxy policy. This is expected behavior. However, there are circumstances that can introduce a more serious issue if latency is found to have increased over time.
To receive notifications the following items need to be configured.
Maintenance tab > Event Logging > Mail tab
Configure Email(s) that should receive notifications.
Click the "New" button.
Enter the email that should receive notifications.
Configure SMTP Server
Check the "Send Event Logs" checkbox
Enter the SMTP server's hostname or IP address and Port number.
Optional - Enter the email address that the email will be sent as.
Highlight the ICAP service that you want to enable notification on.
Check the "Email" checkbox
Critical Threshold: The percentage is calculated based on the active connections opened towards the ICAP server vs the max connections supported. This is calculated per ICAP service based on the connection limit configured.
Time Threshold: The number of seconds between the time the "Critical Threshold" is checked.
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