Hello frens
yes, it's easy when it queue made by static queue. and i sure with this link: Update SMTP & Backup scripts and choice at second script, you will success about it.
at my script, it made dymanic queue user for PPTP/VPN, PPPoE or Hotspot's User by USERMAN as Centarlized AAA Radius Server. and please schedule as yourself by time to time. again i am sure will working fine.....
i used that script since almost 18 months ago.....nice 