Pure-ftpd with mutiple domains separate xfer log files on CentOS 6.4

Pure-ftpd with mutiple domains separate xfer log files on CentOS 6.4

Using the Pure-ftpd daemon to serve ftp service. I've modified the init
script to run multiple domains with different IPs, with separate DBs and
separate WELCOME MSGs.
daemon "$pure_launch_script /etc/pure-ftpd/dom1.conf --daemonize >
/dev/null -F /etc/pure-ftpd/dom1.msg"
daemon "$pure_launch_script /etc/pure-ftpd/dom2.conf --daemonize >
/dev/null -F /etc/pure-ftpd/dom2.msg"
daemon "$pure_launch_script /etc/pure-ftpd/dom3.conf --daemonize >
/dev/null -F /etc/pure-ftpd/dom2.msg"
Everything working flawlessly and perfect without errors. But the pain the
ass is that all the domains that i serving are logged (verbose) in only
one xfer.log file. It's not comfortable for investigate and monitor the
activity. My system using rsyslog wich is very advanced ... So, my only
solution that i see is to filter the messages, but must be filtered by the
IP of the interface that is dedicated to the each one of the multiple
servers and can't find filter for this in rsyslog. That only option is
fromhost-ip ... wich is not working in my case, can't filter by $msg
contains because the users are logged like user@remoteip...
I'm the black hole now... if somebody have a good idea it will be great.