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PasswordExpiryReminder.ps1
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# Email settings
$smartHost = '<Your SMTP Host>'
$sendFrom = '<Your FROM email address>'
$mailTitle = 'Password Expiry Reminder'
# The OU to look in with Get-Aduser
$searchOU = "<OU=Users,DC=acme,DC=local>"
# Get the current date
$date = Get-Date
# Date to check against, ie the date threshold
$dateThreshold
# Specify log file
$logFile = "expiryLog.log"
# Write an entry to the log file, with a date stamp
function LogWrite
{
Param ([string]$newLogMessage)
$funcTime = Get-Date -format o
Add-Content $logFile -value "$funcTime :: $newLogMessage"
}
# If today is Friday, check for users expiring Monday
switch ($date.DayofWeek)
{
'Friday' {
$dateThreshold = (Get-Date).AddDays(+3)
LogWrite " Starting scipt, Friday mode + 3 days"
LogWrite " Threshold date is $dateThreshold"
}
# Don't email on weekends
'Saturday' { Exit }
'Sunday' { Exit }
default {
$dateThreshold = (Get-Date).AddDays(+1)
LogWrite " Starting scipt, normal mode + 1 days"
LogWrite " Threshold date is $dateThreshold"
}
}
# Generate a list of users and convert timestamp
try
{
$users = Get-ADUser -searchbase $searchOU `
-filter {Enabled -eq $True -and PasswordNeverExpires -eq $False} `
-Properties "DisplayName", "msDS-UserPasswordExpiryTimeComputed", "mail"|
where msDS-UserPasswordExpiryTimeComputed -gt 0 |
Select-Object Name,@{ Name="Expiry";Expression={[datetime]::FromFileTime($_."msDS-UserPasswordExpiryTimeComputed") } }, `
mail, givenname, surname, DisplayName
} catch {
LogWrite "Error in getting AD users :: $_.Exception.ItemName :: $_.Exception.Message"
}
# List of users to email due to meeting threshold, convert to array later
$usersToEmail = New-Object System.Collections.Generic.List[System.Object]
# Refine Expiry to a DayofYear for easy comparison
foreach ($user in $users)
{
$userDate = $user.Expiry
if ($userDate.DayofYear -eq $dateThreshold.DayofYear)
{
$usersToEmail.Add($user)
}
}
# Convert system list to array
$usersToEmail.ToArray()
# Compose the email as HTML - this can also be stored in a seperate html file
$mailBody =
" <html>
<head>
<meta name='viewport' content='width=device-width'>
<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>
<title>New User</title>
<style>
@media only screen and (max-width: 620px) {
table[class=body] h1 {
font-size: 28px !important;
margin-bottom: 10px !important;
}
table[class=body] p,
table[class=body] ul,
table[class=body] ol,
table[class=body] td,
table[class=body] span,
table[class=body] a {
font-size: 16px !important;
}
table[class=body] .wrapper,
table[class=body] .article {
padding: 10px !important;
}
table[class=body] .content {
padding: 0 !important;
}
table[class=body] .container {
padding: 0 !important;
width: 100% !important;
}
table[class=body] .main {
border-left-width: 0 !important;
border-radius: 0 !important;
border-right-width: 0 !important;
}
table[class=body] .btn table {
width: 100% !important;
}
table[class=body] .btn a {
width: 100% !important;
}
table[class=body] .img-responsive {
height: auto !important;
max-width: 100% !important;
width: auto !important;
}
}
@media all {
.ExternalClass {
width: 100%;
}
.ExternalClass,
.ExternalClass p,
.ExternalClass span,
.ExternalClass font,
.ExternalClass td,
.ExternalClass div {
line-height: 100%;
}
.apple-link a {
color: inherit !important;
font-family: inherit !important;
font-size: inherit !important;
font-weight: inherit !important;
line-height: inherit !important;
text-decoration: none !important;
}
.btn-primary table td:hover {
background-color: #34495e !important;
}
.btn-primary a:hover {
background-color: #34495e !important;
border-color: #34495e !important;
}
}
.new {
color: #333;
font-family: Helvetica, Arial, sans-serif;
width: 640px;
border-collapse:
collapse; border-spacing: 0;
margin-left: 8px;
}
td.new, th.new {
border: 1px solid transparent;
height: 30px;
transition: all 0.3s;
}
th.new {
background: #DFDFDF;
font-weight: bold;
}
td.new {
text-align: left;
}
</style>
</head>
<body class='' style='background-color: #f6f6f6; font-family: sans-serif; -webkit-font-smoothing: antialiased; font-size: 14px; line-height: 1.4; margin: 0; padding: 0; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%;'>
<table border='0' cellpadding='0' cellspacing='0' class='body' style='border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; background-color: #f6f6f6;'>
<tr>
<td style='font-family: sans-serif; font-size: 14px; vertical-align: top;'> </td>
<td class='container' style='font-family: sans-serif; font-size: 14px; vertical-align: top; display: block; Margin: 0 auto; max-width: 580px; padding: 10px; width: 580px;'>
<div class='content' style='box-sizing: border-box; display: block; Margin: 0 auto; max-width: 580px; padding: 10px;'>
<span class='preheader' style='color: transparent; display: none; height: 0; max-height: 0; max-width: 0; opacity: 0; overflow: hidden; mso-hide: all; visibility: hidden; width: 0;'></span>
<table class='main' style='border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; background: #ffffff; border-radius: 3px;'>
<tr>
<td class='wrapper' style='font-family: sans-serif; font-size: 14px; vertical-align: top; box-sizing: border-box; padding: 20px;'>
<table border='0' cellpadding='0' cellspacing='0' style='border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%;'>
<tr>
<td style='font-family: sans-serif; font-size: 14px; vertical-align: top;'>
<h1>Your password is expiring soon</h1>
<table class='new' border='0' cellpadding='0' cellspacing='0' style=' border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%; '>
<tr cclass='new' style='font-family: sans-serif; font-size: 14px; font-weight: normal; margin: 0; Margin-bottom: 0px;'>
<td class='new'>Please be advised that your account password is set to expire within one business day. To prevent account lockout, please change your password at your earliest convenience.</td>
</tr>
</table>
<p style='font-family: sans-serif; font-size: 14px; font-weight: normal; margin: 0; Margin-bottom: 15px;'><br><br>Kind Regards, <br>Service Desk</p>
</td>
</tr>
</table>
</td>
</tr>
</table>
<div class='footer' style='clear: both; Margin-top: 10px; text-align: center; width: 100%;'>
<table border='0' cellpadding='0' cellspacing='0' style='border-collapse: separate; mso-table-lspace: 0pt; mso-table-rspace: 0pt; width: 100%;'>
<tr>
<td class='content-block' style='font-family: sans-serif; vertical-align: top; padding-bottom: 10px; padding-top: 10px; font-size: 12px; color: #999999; text-align: center;'>
<span class='apple-link' style='color: #999999; font-size: 12px; text-align: center;'>If you experience any difficulties changing your password, please contact the Service Desk<a></span>
</td>
</tr>
</table>
</div>
</div>
</td>
<td style='font-family: sans-serif; font-size: 14px; vertical-align: top;'> </td>
</tr>
</table>
</body>
</html>
"
# Iterate over all users
if ($usersToEmail)
{
foreach ($expiringUser in $usersToEmail)
{
try
{
Send-MailMessage -Subject $mailTitle `
-From $sendFrom `
-To $expiringUser.mail `
-SmtpServer $smartHost `
-body $mailBody `
-BodyAsHtml `
-Priority high
LogWrite " Emailing notification to $($expiringUser.name)"
} catch {
LogWrite " Error in sending an email :: $_.Exception.ItemName :: $_.Exception.Message"
}
}
} else {
LogWrite " No users expiring"
}
LogWrite " Run completed"