[Mailman-Users] Got noticed when a mail has been sent

[Webmaster TIS]

I would like to got noticed, as admin, when Mailman has finished to send a post to a list.
Is there a way to do that in mailman?
If not, how can I extract this info from the smtp log file of Mailman?
Because I saw there was a line saying 
"Aug 08 17:31:14 2005 (6695) <0.123456789.AB12CDEFE at domain.com> smtp for 10045 recips, completed in 2854.373 seconds"
But how can I extract the right information not knowing the number of the post?
How is this number generated?