RE : [exchangelist] RE: spam question(OT)

From: "TIROA YANN" <Yann.Tiroa@xxxxxxxxxxxxxxxxx>
To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
Date: Fri, 15 Jul 2005 00:17:21 +0200
"Well, maybe that is over simplified" -> .... But very nicely explained :-)
 

________________________________

De: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx]
Date: jeu. 14/07/2005 23:07
À: [ExchangeList]
Objet : [exchangelist] RE: spam question(OT)



http://www.MSExchange.org/

No, the BCC field is non-existent to e-mail servers. Any address that the
sending e-mail client might have had in the BCC field is included in the
envelope of the message, but not the message itself.

Think of it this way: The header and body of an e-mail is like a letter
inside of an envelope. On the letter, you have who it is from, date sent,
who it is addressed to, and the body of the letter. You can then take that
letter, photo copy it, and put it into lots of envelopes addressed to
different people.

In a SMTP session, the HELO/EHLO is the hand shake, then the envelope is
presented, then DATA which is the header and body or in the example above
the letter.

Remember, the post office only looks at the envelope, not the letter. Same
with SMTP communications. E-mail servers only process the envelope, not the
DATA. (Well, maybe that is over simplified.)

John T
eServices For You


> -----Original Message-----
> From: Kern, Tom [mailto:tkern@xxxxxxxxxxx]
> Sent: Thursday, July 14, 2005 1:36 PM
> To: [ExchangeList]
> Subject: [exchangelist] RE: spam question(OT)
>
> http://www.MSExchange.org/
>
> you mean the Bcc field is just in the smtp conversation between smtp
servers?
>
> after the ehlo?
> and then its never saved?
> is that it?
> the recieving mail server has to have access to the Bcc field at some
point to deliver
> the message. right?
>
> -----Original Message-----
> From: Mark Fugatt [mailto:markfu@xxxxxxxxxxxxx]
> Sent: Thursday, July 14, 2005 4:29 PM
> To: [ExchangeList]
> Subject: [exchangelist] RE: spam question(OT)
>
>
> http://www.MSExchange.org/
>
> With Exchange 2003 SP1 we can perform BCC Journaling:
>
http://www.microsoft.com/technet/prodtechnol/exchange/guides/E2k3Journal/2eb
bad
> 24-a063-42c2-ae1c-a511b9f8ef0e.mspx
> http://support.microsoft.com/?kbid=810999#XSLTH3142121122120121120120
>
> Mark Fugatt
> Dedicated Supportability Engineer (Exchange)
> Microsoft Services Organisation
> Desk:   +44 (0)118 909 5630
> Mobile: +44 (0)7966 858108
> MSN IM: markfu@xxxxxxxxxxxxxxxxx
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> Dedicated to proactively supporting Microsoft's enterprise Customers
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>
> -----Original Message-----
> From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx]
> Sent: 14 July 2005 20:57
> To: [ExchangeList]
> Subject: [exchangelist] RE: spam question(OT)
>
> http://www.MSExchange.org/
>
> No, the Exchange server has no knowledge of the BCC field. When the e-mail
clients
> sends the messages, it takes the addresses listed in the TO, CC, BCC and
FROM fields
> and uses that as part of the communication. The BCC field is never part of
the actual
> message.
>
> John T
> eServices For You
>
>
> > -----Original Message-----
> > From: Kern, Tom [mailto:tkern@xxxxxxxxxxx]
> > Sent: Thursday, July 14, 2005 12:28 PM
> > To: [ExchangeList]
> > Subject: [exchangelist] RE: spam question(OT)
> >
> > http://www.MSExchange.org/
> >
> > is there anyway to see the Bcc: field on an Exchange server before it
> strips it?
> > I assume your incoming mail server has access to that info at one time
> > as
> the mail is
> > passing thru it?
> >
> > thanks
> >
> > -----Original Message-----
> > From: Raymond Jette [mailto:rjette@xxxxxxxxxx]
> > Sent: Thursday, July 14, 2005 2:47 PM
> > To: [ExchangeList]
> > Subject: [exchangelist] RE: spam question(OT)
> >
> >
> > http://www.MSExchange.org/
> >
> > You name is probably in the BCC field.
> >
> > -----Original Message-----
> > From: Kern, Tom [mailto:tkern@xxxxxxxxxxx]
> > Sent: Thursday, July 14, 2005 2:14 PM
> > To: [ExchangeList]
> > Subject: [exchangelist] spam question(OT)
> >
> > http://www.MSExchange.org/
> >
> > not really exchange related. i was wondering how spammers are able to
> > forge the TO: header of an email so that you get the email even though
> > its not addressed to you.
> >
> > like if i'm joe@xxxxxxxxxxxxxx, i get an email to my inbox addressed
> > only to bob@xxxxxxxxxxxxxx or bob@xxxxxxxxxxxxxxxxxxx?
> > is it that the envelope headers are addessed to me but the email TO:
> > headers are changed?
> >
> > Is this this the same thing as when you get spam and the TO: headers
> > say "undisclosed recipients"?
> >
> > thanks
>
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RE : [exchangelist] RE: spam question(OT)

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