On Mon, 1 Mar 2004 17:13:35 -0500, "Rich Warren" <[EMAIL PROTECTED]> wrote:
> Hello,
>     This is the strangest one that I have seen...
>     One of our clients cannot download mail from only one of her friends.  
> Headers
> indicate that her friend's machine puts out the following as the source 
> received by her
> ISP:
> "from unknown (HELO Dude) ([EMAIL PROTECTED])".
>     The message gets to our server and has been verified to be clean of Viri.
>      Outlook express, however, cannot download the message.  There are no 
> strange
> characters like "carrige returns without line feeds".  As far as I can tell, 
> the only
> unusual thing is that her friend's machine is putting out this unusual 
> version of source
> IP.  I think that it is allowed by RFC's, but it is unusual in other e-mail 
> that is on our
> server.

the : is missing from after the from.  outlook is known for not liking
invalid messages.  the BNF from rfc822 for header fields says 
     field       =  field-name ":" [ field-body ] CRLF

it should be
"from: unknown (HELO Dude) ([EMAIL PROTECTED])"

is there an x-mailer tag in the header?  if so, tell them to report a
bug.  

klint.

+---------------------------------------+-----------------+
: Klint Gore                            : "Non rhyming    :
: EMail   : [EMAIL PROTECTED]           :  slang - the    :
: Snail   : A.B.R.I.                    :  possibilities  :
: Mail      University of New England   :  are useless"   :
:           Armidale NSW 2351 Australia :     L.J.J.      :
: Fax     : +61 2 6772 5376             :                 :
+---------------------------------------+-----------------+
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