Password Notifications

by | Sep 22, 2020 | Information Technology, PowerShell, Resources | 0 comments

I wanted to share a little script that has changed the world at my current company. It’s a simple password email notification script. What it does is grabs the users’ whos passwords about to expire. Then it emails that user with instructions on how to reset their password. Then it sends an email to the user’s manager with a list of when the user’s password will expire. Then finally it sends an email to another person with a complete list of all expiring users and when they will expire. After the user hits zero, the script no longer cares about that person. This is to prevent lots of headaches in the long run with on leave and whatnots. The best thing to do is to set up a scheduled task on a server with rsats. The computer will also need a relay setup on the exchange server.

The Script

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param (
    [parameter(Helpmessage = "Return Email", Mandatory = $true)][string]$ReturnEmail,
    [parameter(Helpmessage = "Email Sent to IT", Mandatory = $true)][string]$ITEmail,
    [parameter(Helpmessage = "Mail Server", Mandatory = $true)][string]$MailServer,
    [parameter(Helpmessage = "Employee Organizational Unit", Mandatory = $true)][string]$EmployeeOU,
    [parameter(Helpmessage = "Training Link", Mandatory = $true)][string]$TrainingLink,
    [parameter(Helpmessage = "Training Link", Mandatory = $true)][string]$DaysWithinExpiration
)
$MaxPwdAge = (Get-ADDefaultDomainPasswordPolicy).MaxPasswordAge.Days
$expiredDate = (Get-Date).addDays(-$MaxPwdAge)
$emailDate = (Get-Date).addDays( - ($MaxPwdAge - $DaysWithinExpiration))
$ExpiredUsers = Get-ADUser -Filter { (PasswordLastSet -lt $emailDate) -and (PasswordLastSet -gt $expiredDate) -and (PasswordNeverExpires -eq $false) -and (Enabled -eq $true) } -Properties DisplayName, PasswordNeverExpires, Manager, PasswordLastSet, Mail, "msDS-UserPasswordExpiryTimeComputed" -SearchBase "$EmployeeOU" | Select-Object DisplayName, samaccountname, manager, PasswordLastSet, @{name = "DaysUntilExpired"; Expression = { $_.PasswordLastSet - $ExpiredDate | Select-Object -ExpandProperty Days } }, @{name = "EmailAddress"; Expression = { $_.mail } }, @{Name = "ExpiryDate"; Expression = { [datetime]::FromFileTime($_."msDS-UserPasswordExpiryTimeComputed") } } | Sort-Object PasswordLastSet
$ExpiredUsers
foreach ($ExpiredUser in $ExpiredUsers) {
    $ReturnHTML = @"
<html>
<head>
<style>
body {
    Color: #252525;
    font-family: Verdana,Arial;
    font-size:11pt;
}
h1 {
    text-align: center;
    color:#C8102E;
    Font-size: 34pt;
    font-family: Verdana, Arial;
}
h2 {
    text-align: center;
    color:#9EA2A2;
    Font-size: 20pt;
}
h3 {
    text-align: center;
    color:#211b1c;
    Font-size: 15pt;
}
h4 {
    text-align: center;
    color:#242526;
    Font-size: 15pt;
}
a:link {
    color:#C8102E;
    text-decoration: underline;
    cursor: auto;
    font-weight: 700;
}
a:visited {
    color:#C8102E;
    text-decoration: underline;
    cursor: auto;
    font-weight: 700;
}
</style>
</head>
<body>
Dear $($ExpiredUser.DisplayName),<br><br>
Your password was last set on <i>$($ExpiredUser.PasswordLastSet)</i>. This means your password will expire in <b>$($ExpiredUser.DaysUntilExpired) Days</b>. Please reset your password before <b>$($ExpiredUser.ExpiryDate)</b><br>
<ol>
<li>Find a computer connected to the network</li>
<li>if the computer is logged in, on your keyboard press, <b>ctrl+alt+del</b> at the same time. </li>
<li>Select <b>Change Password</b></li>
<li>replace the username section with <b>$($ExpiredUser.samaccountname)</b>.</li>
<li>Enter your old password in the old password location.</li>
<li>Enter a new password in the new password location.</li>
<li>Confirm your new password in the confirm password location</li>
<li>Click Enter</li>
</ol>
<br>
<hr>
<br>
For more Information on how to change your password Please watch these videos.<br>
<a href='$TrainingLink'>How to change your Password.</a><br><br>
 
Thank you<br>
IT Department
</body>
</html>
"@ 
    Send-MailMessage -To $($ExpiredUser.EmailAddress) -From "$ReturnEmail" -Subject "$($ExpiredUser.DisplayName) Password Notification" -BodyAsHtml $ReturnHTML -SmtpServer $MailServer
}
$Managers = $ExpiredUsers | Select-Object -ExpandProperty manager -Unique
foreach ($Manager in $Managers) {
    $ReportingtoHTML = $ExpiredUsers | Where-Object { $_.manager -eq $Manager } | Select-Object -Property DisplayName, @{name = "EmailAddress"; Expression = { $_.mail } }, @{label = "DaysUntilExpired"; expression = { "$($_.DaysUntilExpired) Days" } }, ExpiryDate | ConvertTo-Html -Fragment -As Table
    $Manager = Get-ADUser $Manager -Properties DisplayName, PasswordNeverExpires, Manager, PasswordLastSet, "msDS-UserPasswordExpiryTimeComputed" | Select-Object DisplayName, samaccountname, mail, manager, PasswordLastSet, @{name = "DaysUntilExpired"; Expression = { $_.PasswordLastSet - $ExpiredDate | Select-Object -ExpandProperty Days } }, @{name = "EmailAddress"; Expression = { $_.mail } }, @{Name = "ExpiryDate"; Expression = { [datetime]::FromFileTime($_."msDS-UserPasswordExpiryTimeComputed") } } | Sort-Object PasswordLastSet
    $ManagerReturnHTML = @"
<html>
<head>
<style>
h1 {
    text-align: center;
    color:#C8102E;
    Font-size: 34pt;
    font-family: Verdana, Arial;
}
h2 {
    text-align: center;
    color:#9EA2A2;
    Font-size: 20pt;
}
h3 {
    text-align: center;
    color:#211b1c;
    Font-size: 15pt;
}
h4 {
    text-align: center;
    color:#242526;
    Font-size: 15pt;
}
a:link {
    color:#C8102E;
    text-decoration: underline;
    cursor: auto;
    font-weight: 700;
}
a:visited {
    color:#C8102E;
    text-decoration: underline;
    cursor: auto;
    font-weight: 700;
}
body {
width:75%;
background-color:#ffffff;}
table {border-collapse: collapse; border: 1px solid rgb(45,41,38); text-align: Center;}
th {background-color: #f7a1af; text-align: Center;}
tr:nth-child(even) {background-color: #f2f2f2;}
tr {text-align: Center;}
td {border:1px solid rgb(45,41,38);text-align: Center;}
</style>
</head>
<body style="font-family:verdana;font-size:13">
Dear $($Manager.DisplayName),<br><br>
Here is a list of all employees that are reporting to you whose passwords are to expire within the next 14 days. Please have these employees reset their passwords <b>before</b> their expirydate. Please note that we have also sent an email to the employee with the instructions on how to reset their password.<br>
<br>
$ReportingtoHTML
<br>
The below videos have been sent to these employees. If the employee needs help, refer them to these videos or instruct them how to reset their passwords.<br>
<a href='$TrainingLink'>How to change your Password.</a><br><br>
<br>
 
Thank you<br>
IT Department
</body>
</html>
"@ 
    Send-MailMessage -To $($Manager.EmailAddress) -From "$ReturnEmail" -Subject "User Password Notification" -BodyAsHtml $ManagerReturnHTML -SmtpServer $MailServer
}
$ITReturnHTML = $ExpiredUsers | Select-Object @{label = "Name"; expression = { $_.Displayname } }, @{Label = "UserName"; expression = { $_.samaccountname } }, EmailAddress, @{label = "Manager"; expression = { $(($_.Manager.Split(',')).split('=')[1]) } }, ExpiryDate, @{Label = "Days"; expression = { $_.DaysUntilExpired } } | ConvertTo-Html -Fragment -As Table
$ItReportReturnHTML = @"
<html>
<head>
<style>
h1 {
    text-align: center;
    color:#C8102E;
    Font-size: 34pt;
    font-family: Verdana, Arial;
}
h2 {
    text-align: center;
    color:#9EA2A2;
    Font-size: 20pt;
}
h3 {
    text-align: center;
    color:#211b1c;
    Font-size: 15pt;
}
h4 {
    text-align: center;
    color:#242526;
    Font-size: 15pt;
}
a:link {
    color:#C8102E;
    text-decoration: underline;
    cursor: auto;
    font-weight: 700;
}
a:visited {
    color:#C8102E;
    text-decoration: underline;
    cursor: auto;
    font-weight: 700;
}
body {
background-color:#ffffff;}
table {border-collapse: collapse; border: 1px solid rgb(45,41,38); text-align: Center;}
th {background-color: #54c6ff; text-align: Center;}
tr:nth-child(even) {background-color: #f2f2f2;}
tr {text-align: Center;width:20%;}
td {border:1px solid rgb(45,41,38);text-align: Center;}
</style>
</head>
<body style="font-family:verdana;font-size:13">
Dear IT,<br><br>
Please see the expiring/expired password list below.
<br><br>
$ITReturnHTML
<br>
The below videos have been sent to these employees. If the employee needs help, refer them to these videos or instruct them how to reset their passwords.<br>
<a href='$TrainingLink'>How to change your Password.</a><br><br>
<br>
 
Thank you<br>
IT Department
</body>
</html>
"@ 
Send-MailMessage -To $ITEmail -From "$ReturnEmail" -Subject "Password Expiry Notification" -BodyAsHtml $ItReportReturnHTML -SmtpServer $MailServer
$Admins = Get-ADUser -Filter { (samaccountname -like "*_adm") -and (PasswordLastSet -lt $emailDate) -and (PasswordLastSet -gt $expiredDate) -and (PasswordNeverExpires -eq $false) -and (enabled -eq $true) } -Properties *
Foreach ($Admin in $Admins) {
    $Username = $Admin.samaccountname -replace "(_.*)", ""
    $User = Get-ADUser -Identity $Username -Properties *
    $ReturnHTML = @"
<html>
<head>
<style>
body {
    Color: #252525;
    font-family: Verdana,Arial;
    font-size:11pt;
}
h1 {
    text-align: center;
    color:#C8102E;
    Font-size: 34pt;
    font-family: Verdana, Arial;
}
h2 {
    text-align: center;
    color:#9EA2A2;
    Font-size: 20pt;
}
h3 {
    text-align: center;
    color:#211b1c;
    Font-size: 15pt;
}
h4 {
    text-align: center;
    color:#242526;
    Font-size: 15pt;
}
a:link {
    color:#C8102E;
    text-decoration: underline;
    cursor: auto;
    font-weight: 700;
}
a:visited {
    color:#C8102E;
    text-decoration: underline;
    cursor: auto;
    font-weight: 700;
}
</style>
</head>
<body>
Dear $($User.DisplayName),<br><br>
Your Admin password was last set on <i>$($Admin.PasswordLastSet)</i>. This means your password will expire in <b>$($admin.DaysUntilExpired) Days</b>. Please reset your password before <b>$($Admin.ExpiryDate)</b><br>
<ol>
<li>Find a computer connected to the network</li>
<li>if the computer is logged in, on your keyboard press, <b>ctrl+alt+del</b> at the same time. </li>
<li>Select <b>Change Password</b></li>
<li>replace the username section with <b>$($Admin.samaccountname)</b>.</li>
<li>Enter your old password in the old password location.</li>
<li>Enter a new password in the new password location.</li>
<li>Confirm your new password in the confirm password location</li>
<li>Click Enter</li>
</ol>
<br>
<hr>
<br>
For more Information on how to change your password Please watch these videos.<br>
<a href='$TrainingLink'>How to change your Password.</a><br><br>
 
Thank you<br>
IT Department
</body>
</html>
"@ 
    Send-MailMessage -To $($User.EmailAddress) -From "$ReturnEmail" -Subject "$($User.DisplayName) Password Notification" -BodyAsHtml $ReturnHTML -SmtpServer $MailServer
}

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