PowerShell

Send an SMTP RSET Command

Demonstrates the Chilkat MailMan.SmtpReset method, which sends an SMTP RSET command to the server. RSET resets the server-side state of the current mail transaction. This example opens a connection, sends RSET, and closes.

Background: During an SMTP session a message is built up across MAIL FROM and RCPT TO commands. If you need to abandon that partially-specified transaction — say an error occurred midway — RSET clears it without dropping the connection, so the same authenticated session can start a fresh message. It's a lightweight way to recover in-session rather than reconnecting.

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

$success = $false

#  Demonstrates the MailMan.SmtpReset method, which sends an SMTP RSET command to the server.
#  RSET resets the server-side state of the current mail transaction.

$mailman = New-Object Chilkat.MailMan

#  Configure the SMTP server connection.
$mailman.SmtpHost = "smtp.example.com"
$mailman.SmtpPort = 465
$mailman.SmtpSsl = $true
$mailman.SmtpUsername = "user@example.com"
$mailman.SmtpPassword = "myPassword"

#  Open the connection.

$success = $mailman.OpenSmtpConnection()
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

#  Reset the current SMTP mail transaction.
$success = $mailman.SmtpReset()
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

$success = $mailman.CloseSmtpConnection()
if ($success -eq $false) {
    $($mailman.LastErrorText)
    exit
}

$("Sent SMTP RSET.")