(PowerShell) SMTP NTLM Authentication

See more SMTP Examples

Demonstrates how to specify NTLM authentication for sending email via SMTP.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$mailman = New-Object Chilkat.MailMan

# Specify your particular mail server's SMTP settings.
$mailman.SmtpHost = "smtp.my_mail_server.com"
$mailman.SmtpPort = 587
$mailman.StartTLS = $true

# This assumes you know your SMTP server supports NTLM authentication.
# To explicitly request NTLM authentication, set the SmtpAuthMethod property = "ntlm".
$mailman.SmtpAuthMethod = "ntlm"

# Note: Normally you should avoid setting the SmtpAuthMethod.
# SMTP servers tell the connecting client the authentication methods it will accept when the initial connection is made.
# Chilkat will automatically use this information to select and use the most secure auth method supported by the server.

$useCurrentWindowsUser = $true

if ($useCurrentWindowsUser -eq $true) {
    # If you are running on Windows, and you wish for the NTLM credentials of the current logged-on Windows user to be used,
    # set the username and password to the string "default"
    $mailman.SmtpUsername = "default"
    $mailman.SmtpPassword = "default"
}
else {
    # Explicitly specify the SMTP username/password
    # The SMTP username is your email account username, which is often your email address.
    $mailman.SmtpUsername = "your_smtp_username_or_email_address"
    $mailman.SmtpPassword = "your_password"
}

$email = New-Object Chilkat.Email

$email.Subject = "This is a test"
$email.Body = "This is a test"
# Don't forget to change this to use your email addresses..
$email.From = "Chilkat Support <support@chilkatsoft.com>"
$success = $email.AddTo("Chilkat Admin","admin@chilkatsoft.com")
# To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

$success = $mailman.SendEmail($email)
if ($success -ne $true) {
    $($mailman.LastErrorText)
    exit
}

$success = $mailman.CloseSmtpConnection()
if ($success -ne $true) {
    $("Connection to SMTP server not closed cleanly.")
}

$("Mail Sent!")