RE: Internal e-mails can be edited

  • From: "Mulnick, Al" <Al.Mulnick@xxxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Tue, 18 May 2004 09:19:13 -0400

???  What do you mean they can be modified?  In transit?  Or once the
recipient gets it?  For either of those, I think you should read the RFCs
(2821 and 2822; heck go back read 821 and 822 while at it).  SMTP is not
intended to be a secure protocol.  In fact, far from it.  
If you need to verify that what you sent is what the recipient got
UNALTERED, then you want to look into digital signatures.  If you want to
prevent reading of the data by others, then you want to look into S/MIME and
Once the recipient has the message, they 'own' it.  They can now do what
they want with it.  To prevent that, see the earlier parts which would cause
them to have to create a new message vs. modifiying the original.  If you
want a little different functionality, you can look into the Microsoft
digital rights management product.  It can allow people to set permissions
such as "do not print" and "do not forward" etc.  Requires many upgrades
from where you currently are.


From: Deshwal, Chand [mailto:CDD@xxxxxxxxxxxxx] 
Sent: Tuesday, May 18, 2004 3:54 AM
To: [ExchangeList]
Subject: [exchangelist] Internal e-mails can be edited


In exchange 5.5 sp4 at windows 2000 sp4 and Outlook 2000, all the internal
e-mails sent/received internally can be modified. This is serious issue.

If the e-mails are sent in Plain text, then the recepient cannot modify

Any comments!!!!!!!!! 

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