How to detect encrypted message?

[Igor Kolosovski]

Hello.

I'm working on C++ ATL add-in for outlook 2007, which should detect if message is encrypted just before send. If no, then check its body using some mask and remind user to encrypt it if necessary. Even better to enable "Encrypt message..." property automatically.

It was not a problem to get _MailItem:

void __stdcall CAddin::OnSend(IDispatch *Obj,VARIANT_BOOL *CancelDefault)
{
CComQIPtr<Outlook::_MailItem> pMi(Obj);
//CComBSTR body;
//pMi->get_Body(&body);
....
}

, but I could not find how to check if message is encrypted. Is there some way?
Thanks in advance!


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[Ken Slovak - [MVP - Outlook]]

Check the MessageClass of the item.

 

[Igor Kolosovski]

Unfortunately MessageClass is always IPM.Note, when IPM.Note.SMIME is expected. Possible cause is that I perform check before send, but message is not encrypted yet and MessageClass is not set to necessary value.
Any ideas?
Thanks.



Ken Slovak - [MVP - Outlook] wrote:

Check the MessageClass of the item.--Ken Slovak[MVP - Outlook]http://www.
10-Dec-09

Check the MessageClass of the item

-
Ken Slova
[MVP - Outlook
http://www.slovaktech.co
Author: Professional Programming Outlook 2007
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm

Previous Posts In This Thread:


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[Ken Slovak - [MVP - Outlook]]

That's the only way I'm familiar with, but I don't deal with encrypted items
very often.

My only other suggestion is to grab items that are unencrypted and encrypted
and see what MAPI properties are different on them using a view such as
OutlookSpy or MFCMAPI.

You might also want to try that before and after saving the items.

 

[Dmitry Streblechenko]

Outlook always represents signed/encrypted messages as regular IPM.Note
messages. It goes sa far as furnishing a fake IMessage MAPI object returned
by the MailItem.MAPIOBJECT property.
You can reopen the message using MAPI/CDO 1.21/Redemption and then check the
Message class.

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