>From Shyam's book:

"CoreyB" <unc27932@yahoo.com> wrote in message
news:1157989677.092668.30950@e3g2000cwe.googlegroups.com...
>I have a question that needs clearing up. I know that I do want to use
> the multicast feature. Our app is such that we may have thousands of
> users subscribed to one specific event, so clearly we don't want to
> format thousands of times. We want to format just once, to save
> resources.
>
> We are using the SMTP delivery protocol - so my question is: if I send
> the same message to 1000 subscribers using multicasting - is this going
> to put all of my subscribers' email addresses in the email header??
>
>>From Shyam's book:
>
> "If the network protocol provides a way to send as single message to
> multiple recipients, the delivery protocol can use this facility".
>
> Clearly SMTP allows this - you see it all the time when you send an
> email to multiple people. But I don't want other subscribers' data
> visible - only the subscriber meant for the message.
>

Warren Brunk wrote:
> ms-help://MS.SQLCC.v9/MS.SQLSVR.v9.en/sqlntsv9/html/bfdfa945-96cf-43f1-bb5c-3c8648c6519a.htm
>
> When multicast delivery is enabled, the delivery protocol receives the
> formatted message once with a list of subscriber information. The delivery
> protocol must be able to use the recipient list to send the formatted
> message to multiple subscribers. It can do this either by sending a single
> message, if the network protocol supports true multicast delivery, or by
> simply iterating through the subscriber list and sending the same message to
> each subscriber.
>
> SMTP - If you use the BCC in Smtp all recipients will be blind the the other
> users. A better way might be to iterate through and send one email at a
> time.
>
> Does that help?
>
> --
> /*
> Warren Brunk - MCITP - SQL 2005, MCDBA
> www.techintsolutions.com
> */
>
>
> "CoreyB" <unc27932@yahoo.com> wrote in message
> news:1157989677.092668.30950@e3g2000cwe.googlegroups.com...
> >I have a question that needs clearing up. I know that I do want to use
> > the multicast feature. Our app is such that we may have thousands of
> > users subscribed to one specific event, so clearly we don't want to
> > format thousands of times. We want to format just once, to save
> > resources.
> >
> > We are using the SMTP delivery protocol - so my question is: if I send
> > the same message to 1000 subscribers using multicasting - is this going
> > to put all of my subscribers' email addresses in the email header??
> >
> >>From Shyam's book:
> >
> > "If the network protocol provides a way to send as single message to
> > multiple recipients, the delivery protocol can use this facility".
> >
> > Clearly SMTP allows this - you see it all the time when you send an
> > email to multiple people. But I don't want other subscribers' data
> > visible - only the subscriber meant for the message.
> >