If your orginization has users who is working outside office network and they normally access email through pop3 then chances that they do not have any notification on password change. This script helps to intimate the give list of users to change the password.
Please find the copy of the script in the below link
http://powershell.com/cs/members/smtpport25.wordpress/files/PasswordChangeNotification.txt.aspx
SMTP Port 25 
hey looks my blog
i had make script on powershell for send notification mail when passwords users will expire in X days ..
http://powershell-land.blogspot.com/2009/11/envoyer-des-notifications-de-rappel.html
Hi,
Thank you This is really cool
Regards,
Krishna
I have found the script for password change notication. But don’t know how to use this. Please somebody on how to use this script.
Thanks,
Atik.
Hi,
This is the Vbs scrip. copy the script and past it in the notepad and save it to .vbs file.
This script take the list of user name(Alias) name and input and generate the email on the password expiration details
Please let know if you need any more information
Regards,
Krishna