irule client IP address logging on SMTP Filter

Hello experts,

 

I currently have a SMTP filter configured to only allow IPs configured in the SMTP whitelist to access the SMTP gateway. I need assistance now please with logging client IP addresses who access the SMTP gateway. I would like to avoid logging this to the local traffic logs and would like to implement the logs to be sent to the BIG IQ? Currently the BIG IQ shows the number of connections (I think through the generic bigiq analytics iapp) , but I would like to see the respective client IP addresses as well.

 

Thank you for your assistance.