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(PowerBuilder) Create DSN (Delivery Status Notification) Email

Demonstrates how to create a DSN (Delivery Status Notification) Email having the format as defined in RFC 3464.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Email
integer li_Success
oleobject loo_Xml
string ls_XmlStr
integer li_BHeaderOnly
string ls_HumanReadableExplanation
oleobject loo_DsnEmail

loo_Email = create oleobject
li_rc = loo_Email.ConnectToNewObject("Chilkat_9_5_0.Email")
if li_rc < 0 then
    destroy loo_Email
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  A DSN email is a report about the attempt to delivery
//  an email.  It is usually a report that indicates failure or
//  or a delay in delivery.  The DSN is typically sent back to
//  the sender of an email.

//  IMPORTANT:
//  Note: Please be careful in sending automated DSN's.
//  It is important to be aware of an issue called "backscatter".
//  See the Wikipedia article here:  http://en.wikipedia.org/wiki/Backscatter_%28e-mail%29

//  The CreateDsn method will be called to create a new
//  DSN email based upon the email object calling CreateDsn.
//  The email object instance used to call CreateDsn would
//  typically be an email received from a POP3 or IMAP server.
//  In this case, to simplify the example, we'll load the email
//  from a .eml file.

//  This example will be creating a DSN for "someEmail.eml"
li_Success = loo_Email.LoadEml("someEmail.eml")
if li_Success <> 1 then
    Write-Debug loo_Email.LastErrorText
    destroy loo_Email
    return
end if

//  The DSN created by CreateDsn will contain a
//  "message/delivery-status" MIME sub-part that will
//  be composed of a number of name-value pairs.
//  See RFC 3464 ( http://tools.ietf.org/html/rfc3464 )
//  The name-value content for this part is passed
//  as XML to CreateDsn. This part of the example
//  prepares the XML:
loo_Xml = create oleobject
li_rc = loo_Xml.ConnectToNewObject("Chilkat_9_5_0.Xml")

//  For this example, we're just adding a few name-value pairs.
//  These should not be considered to be correct, required or
//  even sensible -- it's simply for the example.
loo_Xml.Tag = "DeliveryStatusFields"
loo_Xml.NewChild2("Status","5.1.2 (bad destination system: no such domain)")
loo_Xml.NewChild2("Diagnostic-Code","smtp; Permanent failure: no such domain")
loo_Xml.NewChild2("X-BounceCategory","bad-domain")

ls_XmlStr = loo_Xml.GetXml()

//  The last argument to be passed to CreateDsn will be a boolean
//  indicating whether to include the entire MIME of the calling
//  email object in the DSN, or only the header.
//  It may make sense to include the entire email for small emails,
//  but for large emails (with large attachments) it's probably
//  best to make the DSN header-only.
li_BHeaderOnly = 1

//  The first argument to be passed to CreateDsn will
//  be a human-readable explanation that will be placed
//  into the 1st MIME part of the DSN (see RFC 3464).
ls_HumanReadableExplanation = "Blah blah blah. The delivery of this email failed. Blah blah blah"

//  OK, we're ready to create DSN....

loo_DsnEmail = loo_Email.CreateDsn(ls_HumanReadableExplanation,ls_XmlStr,li_BHeaderOnly)

if not (isnull(loo_DsnEmail)) then
    //  Show the MIME of the source (original) email:
    Write-Debug loo_Email.GetMime()

    Write-Debug "**************************************"

    //  Show the MIME of the DSN email:
    Write-Debug loo_DsnEmail.GetMime()
else
    Write-Debug loo_Email.LastErrorText
end if

destroy loo_DsnEmail

//  Sample output showing the MIME of the original email,
//  and the DSN email created based upon it:


/*-

X-Account-Key: account2
X-UIDL: 0D154945439D42BD80F180F6D9DE4D82
Received: with MailEnable Postoffice Connector;
	 Tue, 21 Jun 2011 09:21:23 -0400
Received: from qmta14.emeryville.ca.mail.comcast.net ([76.96.227.212]) by chilkatsoft.com with MailEnable ESMTP;
	 Tue, 21 Jun 2011 09:21:22 -0400
Received: from omta03.emeryville.ca.mail.comcast.net ([76.196.30.27]) by qmta14.emeryville.ca.mail.comcast.net with comcast id yd4k1g0050b6N64AEdLW9x;
	 Tue, 21 Jun 2011 13:20:30 +0000
Received: from [127.0.0.1] ([67.175.202.103]) by omta03.emeryville.ca.mail.comcast.net with comcast id ydLV1g00n2EMkZ78PdLWxi;
	 Tue, 21 Jun 2011 13:20:31 +0000
Message-ID: <4E009AA4.3090205@chilkatsoft.com>
Date: Tue, 21 Jun 2011 08:20:36 -0500
From: Chilkat Software <admin@chilkatsoft.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10
MIME-Version: 1.0
To: Chilkat Support <support@chilkatsoft.com>
Subject: test 123
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Return-Path: <>
X-Antivirus: avast! (VPS 110621-0, 06/21/2011), Inbound message
X-Antivirus-Status: Clean

This is a test 123



**************************************
Content-Type: multipart/report; report-type=delivery-status;
	 boundary="------------070202040604030701060106"

--------------070202040604030701060106
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

Blah blah blah. The delivery of this email failed. Blah blah blah
--------------070202040604030701060106
Content-Type: message/delivery-status

Status: 5.1.2 (bad destination system: no such domain)
Diagnostic-Code: smtp; Permanent failure: no such domain
X-BounceCategory: bad-domain

--------------070202040604030701060106
Content-Type: text/rfc822-headers

X-Account-Key: account2
X-UIDL: 0D154945439D42BD80F180F6D9DE4D82
Received: with MailEnable Postoffice Connector;
	 Tue, 21 Jun 2011 09:21:23 -0400
Received: from qmta14.emeryville.ca.mail.comcast.net ([76.96.227.212]) by chilkatsoft.com with MailEnable ESMTP;
	 Tue, 21 Jun 2011 09:21:22 -0400
Received: from omta03.emeryville.ca.mail.comcast.net ([76.196.30.27]) by qmta14.emeryville.ca.mail.comcast.net with comcast id yd4k1g0050b6N64AEdLW9x;
	 Tue, 21 Jun 2011 13:20:30 +0000
Received: from [127.0.0.1] ([67.175.202.103]) by omta03.emeryville.ca.mail.comcast.net with comcast id ydLV1g00n2EMkZ78PdLWxi;
	 Tue, 21 Jun 2011 13:20:31 +0000
Message-ID: <4E009AA4.3090205@chilkatsoft.com>
Date: Tue, 21 Jun 2011 08:20:36 -0500
From: Chilkat Software <admin@chilkatsoft.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10
MIME-Version: 1.0
To: Chilkat Support <support@chilkatsoft.com>
Subject: test 123
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Return-Path: <>
X-Antivirus: avast! (VPS 110621-0, 06/21/2011), Inbound message
X-Antivirus-Status: Clean
--------------070202040604030701060106--



*/


destroy loo_Email
destroy loo_Xml

 

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