I can't do it at login because users lock (for a long time) their workstations instead of logging off. I know how to get a list of users for the domain, but how do I use that list to check for password age and send e-mail??
user.txt:
usera userb userc
userd usere etc...

code:
 
$maxpwage=10 
open users.txt
realine(1)
    while $rc=0
        extract usera from line1
        If usera password > $maxpwage
          send e-mail to usera
        endif  
        readline(1)
    loop