AutoIt

Send DKIM Signed Email

See more DKIM / DomainKey Examples

Demonstrates how to send DKIM signed email. AutoIt

Local $bSuccess = False

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

$oMailman = ObjCreate("Chilkat.MailMan")
$oDkim = ObjCreate("Chilkat.Dkim")

; SMTP server settings...
$oMailman.SmtpHost = "SMTP_DOMAIN"
$oMailman.SmtpUsername = "SMTP_LOGIN"
$oMailman.SmtpPassword = "SMTP_PASSWORD"
$oMailman.SmtpPort = 465
$oMailman.SmtpSsl = True

$oEmail = ObjCreate("Chilkat.Email")

$oEmail.Subject = "This is a test"
$oEmail.Body = "This is a test"
$oEmail.From = "Chilkat Support <support@chilkatsoft.com>"

; Add some recipients (BCC recipients are added below)
$oEmail.AddTo("Chilkat Software","chilkat_software@yahoo.com")
$oEmail.AddTo("Chilkat Admin","admin@chilkatsoft.com")
$oEmail.AddCC("Chilkat Admin","admin@chilkat.io")

; When sending an email with a DKIM signature, the MIME
; of the email must not be modified prior to
; or during the sending process.  Therefore, the MIME of the
; email is assembled, the DKIM signature is added, and then
; SendMimeBd is called to send the email.

; First get the MIME of the email.  Calling RenderToMimeBd 
; causes the email to be signed and/or encrypted if those options
; have been selected.  The MIME returned by RenderToMimeBd
; is the exact MIME that would've been sent if SendEmail was
; called.  We'll add a DKIM signature header to this MIME and then send...
$oBdMime = ObjCreate("Chilkat.BinData")
$bSuccess = $oMailman.RenderToMimeBd($oEmail,$oBdMime)
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

; To create a DKIM signature,
; you'll need to provide the following:
; (1) An RSA private key in any common file format.
; (2) The domain name (typically the same domain
; as the sender of an email).
; (3) A selector for the domain name -- an arbitrary string
; to identify the matching public key in DNS.

; To allow an email recipient to verify the DKIM signature via an
; external email client supporting DKIM or using other software,
; you will need to create a DNS record with the selector
; and matching public key.  This example does not provide
; information about DKIM DNS record creation.  
; (Chilkat does not provide an API for creating DNS records.  
; Creating the DKIM DNS record is something you would do
; manually.)

; Set the domain and selector:
; You'll need to provide your own values here..
$oDkim.DkimDomain = "chilkatsoft.com"
$oDkim.DkimSelector = "brisbane"

; Load a private key from any common RSA private key
; format, such as DER, PKCS8, PEM, XML, etc.
; The LoadDkimPkFile method automatically detects
; the file format and reads it appropriately.
; If a password is not required, you'll still need to provide
; an empty password string argument, but it is ignored.
Local $sPassword = "passwd"
$oPrivKey = ObjCreate("Chilkat.PrivateKey")
$bSuccess = $oPrivKey.LoadAnyFormatFile("qa_data/pem/rsa_passwd.pem",$sPassword)
If ($bSuccess = False) Then
    ConsoleWrite($oPrivKey.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oDkim.SetDkimPrivateKey($oPrivKey)
If ($bSuccess = False) Then
    ConsoleWrite($oDkim.LastErrorText & @CRLF)
    Exit
EndIf

; Add the DKIM-Signature header to the MIME in bdMime
$bSuccess = $oDkim.DkimSign($oBdMime)
If ($bSuccess = False) Then
    ConsoleWrite($oDkim.LastErrorText & @CRLF)
    Exit
EndIf

; If desired, examine the MIME of the email being sent.
$oBdMime.WriteFile("qa_output/dkimSigned.eml")

; ---- Prepare to send the email contained in bdMime ---

; To send to multiple email addresses, the strRecipients should be set to a comma-separated
; list of email addresses.

; Note: This is where we can add additional BCC addreses.
; Here we are adding "chilkat.support@gmail.com" as an additional BCC address.
; Notice that the 1st three email addresses are NOT BCC because these email addresses
; appear in the MIME header of the email (in the "To" and "CC" header fields).
; A BCC email address does not appear in the MIME, and thus the non-BCC recipients cannot see
; that the email was also sent to the BCC address.  (BCC means "blind carbon copy")
Local $strRecipients = "chilkat_software@yahoo.com, admin@chilkatsoft.com, admin@chilkat.io, chilkat.support@gmail.com"
Local $strFrom = "support@chilkatsoft.com"

$bSuccess = $oMailman.SendMimeBd($strFrom,$strRecipients,$oBdMime)
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oMailman.CloseSmtpConnection()
If ($bSuccess <> True) Then
    ConsoleWrite("Connection to SMTP server not closed cleanly." & @CRLF)
EndIf

ConsoleWrite("DKIM Signed Mail Sent!" & @CRLF)