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(Tcl) 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 Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

set email [new_CkEmail]

# 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"
set success [CkEmail_LoadEml $email "someEmail.eml"]
if {$success != 1} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    exit
}

# 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:
set xml [new_CkXml]

# 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.  
CkXml_put_Tag $xml "DeliveryStatusFields"
CkXml_NewChild2 $xml "Status" "5.1.2 (bad destination system: no such domain)"
CkXml_NewChild2 $xml "Diagnostic-Code" "smtp; Permanent failure: no such domain"
CkXml_NewChild2 $xml "X-BounceCategory" "bad-domain"

set xmlStr [CkXml_getXml $xml]

# 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.
set 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).
set humanReadableExplanation "Blah blah blah. The delivery of this email failed. Blah blah blah"

# OK, we're ready to create DSN....
# dsnEmail is a CkEmail

set dsnEmail [CkEmail_CreateDsn $email $humanReadableExplanation $xmlStr $bHeaderOnly]
if {[CkEmail_get_LastMethodSuccess $email] == 0} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    delete_CkXml $xml
    exit
}

# Show the MIME of the source (original) email:
puts [CkEmail_getMime $email]

puts "**************************************"

# Show the MIME of the DSN email:
puts [CkEmail_getMime $dsnEmail]

delete_CkEmail $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--
# 
# 

delete_CkEmail $email
delete_CkXml $xml

 

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