Unable to add "X-Header" to a mail that is being sent...

Unable to add "X-Header" to a mail that is being sent...

Post by Z29wa » Sat, 12 May 2007 23:16:00


Environment:
-Outlook 2002(XP)
-Added references to "Microsoft Outlook 10.0 Object Library" & "Microsoft
CDO 1.21 Library"

I have written a VB project using MS Visual Basic 6.0. My intention is to
add a X-Header to a mail that is being sent from

Outlook. I am capturing the ItemSend event and trying to add the header in
that event handler.

Please find the complete source code below. Please note that the Sub
ChangeHeader() is working fine if I call it for

an existing mail in my Outlook Inbox. But I have a problem in calling this
ChangeHeader() from my ItemSend event handler, as

ChangeHeader() takes MAPI.Message as an argument, but MyOLApp_ItemSend() is
giving me Outlook.MailItem.

How do I convert Outlook.MailItem to MAPI.Message?
Or
Is there any other way to add the X-header without needing to have a
MAPI.Message object?


Thanks,
Gopi

************************************************************************


Public WithEvents MyOLApp As Outlook.Application

Sub Intialize_Event_Handlers()

Set MyOLApp = Application
MsgBox "Initialize Event Handlers successful"

End Sub



Private Sub Command1_Click()

Intialize_Event_Handlers

End Sub



Private Sub MyOLApp_ItemSend(ByVal Item As Object, Cancel As Boolean)

MsgBox "I am in ItemSend handler"

Dim myMailItem As Outlook.MailItem
Set myMailItem = Item

MsgBox myMailItem.Subject

'How do I now call ChangeHeader(), which takes MAPI.Message, as an
argument!!!
'Add the custom header now
'ChangeHeader oMessage


End Sub



Sub ChangeHeader(oMessage As MAPI.Message)

' Initalize error handling
On Error Resume Next

MsgBox "ChangeHeader - BEGIN", vbInformation

Dim oFields As MAPI.Fields
Set oFields = oMessage.Fields

Dim strheader As String

' Get SMTP header
Err.Clear
strheader = oFields.Item(CdoPR_TRANSPORT_MESSAGE_HEADERS).Value

If Err.Number = 0 Then
MsgBox strheader 'Display the original Internet headers

'Append the custom X-Header now!
oMessage.Fields(CdoPR_TRANSPORT_MESSAGE_HEADERS) =
oMessage.Fields(CdoPR_TRANSPORT_MESSAGE_HEADERS) & vbCrLf &

"X-MY-HEADER9: Hello"

ElseIf Err.Number = &H8004010F Then
Err.Clear
MsgBox "No SMTP message header information on this message",
vbInformation

'Add the custom X-Header now
oFields.Add CdoPR_TRANSPORT_MESSAGE_HEADERS, "X-MY-NEWHEADER: Hello"

Else
MsgBox "some vague scenario", vbInformation

End If


oMessage.Update

MsgBox "ChangeHeader - END", vbInformation

End Sub


************************************************************************
 
 
 

Unable to add "X-Header" to a mail that is being sent...

Post by Dmitry Str » Sun, 13 May 2007 03:22:13

odifying the PR_TRANSPORT_MESSAGE_HEADERS property has no effect on the
outgoing messages.
To add an X-header, you need to create a named string MAPI property with a
particular GUID.
See http://www.dimastr.com/redemption/faq.htm#14 for a Redemption example.
It shows howw to change the "From" header, but it is equally applicable to
any MME header.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"gopi" < XXXX@XXXXX.COM > wrote in message
news: XXXX@XXXXX.COM ...



 
 
 

Unable to add "X-Header" to a mail that is being sent...

Post by Z29wa » Mon, 14 May 2007 17:36:00

hanks for your response.
But unfortunately the program is crashing when the following statement is
encountered.
Tag = sItem.GetIDsFromNames("{00020386-0000-0000-C000-000000000046}",
"From")

How can I fix this problem?

Please find the complete code below.

Thanks,
gopi

------------------------------------------------------------------
Public WithEvents MyOLApp As Outlook.Application
Public WithEvents MyOLItems As Outlook.Items


Sub Intialize_Event_Handlers()

Set MyOLApp = Application
Set MyOLItems = Application.Session.GetDefaultFolder(olFolderInbox).Items

MsgBox "Initialize Event Handlers successful"

End Sub

Private Sub Command1_Click()
Intialize_Event_Handlers
End Sub

Private Sub MyOLApp_ItemSend(ByVal Item As Object, Cancel As Boolean)
MsgBox "I am in ItemSend handler"

Dim myMailItem As Outlook.MailItem
Set myMailItem = Item

MsgBox myMailItem.Subject

Dim sItem As Redemption.SafeMailItem
Set sItem = CreateObject("Redemption.SafeMailItem")
sItem.Item = myMailItem


Tag = sItem.GetIDsFromNames("{00020386-0000-0000-C000-000000000046}",
"From") 'It is crashing here
Tag = Tag Or &H1E 'the type is PT_STRING8
sItem.Fields(Tag) = "Someone < XXXX@XXXXX.COM >"
sItem.Subject = sItem.Subject 'to trick Outlook into thinking that
something has changed
sItem.Save


End Sub
-------------------------------------------------------------------



"Dmitry Streblechenko" wrote:

 
 
 

Unable to add "X-Header" to a mail that is being sent...

Post by Dmitry Str » Wed, 16 May 2007 02:02:24

rashing as in producing an access violation or as in "returning a COM
error"? In the latter case, what is the error?

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"gopi" < XXXX@XXXXX.COM > wrote in message
news: XXXX@XXXXX.COM ...


 
 
 

Unable to add "X-Header" to a mail that is being sent...

Post by Z29wa » Wed, 16 May 2007 13:38:36

ere is the exact error message I am getting:

[
Microsoft Visual Basic
--------------------------

Run-time error '-2147418113 (8000ffff)':
Error in _HrGetIDsFromNames - IMAPIProp == NULL
]

Thanks.

"Dmitry Streblechenko" wrote:

 
 
 

Unable to add "X-Header" to a mail that is being sent...

Post by Dmitry Str » Wed, 16 May 2007 15:05:35

hat is your version of Outlook? Do you by by chance have both Outlook and
Exchange Server installed on the same machine?

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"gopi" < XXXX@XXXXX.COM > wrote in message
news: XXXX@XXXXX.COM ...


 
 
 

Unable to add "X-Header" to a mail that is being sent...

Post by Z29wa » Wed, 16 May 2007 16:13:01

am using Outlook 2002 (10.2627.2625).
Yes, I have Exchange 2003 and Outlook 2002 installed on the same machine.

Thanks.

"Dmitry Streblechenko" wrote:

 
 
 

Unable to add "X-Header" to a mail that is being sent...

Post by Dmitry Str » Thu, 17 May 2007 01:55:36

uch a configuration is not supported by MS: both Outlook and Exchange
install their own incompativle versions of MAPI. In this particular case,
Redemption ends up using the Exchange version of MAPI, so the marshalling of
MAPI objects does not work correctly.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"gopi" < XXXX@XXXXX.COM > wrote in message
news: XXXX@XXXXX.COM ...