Re: Multicast & SMTP question
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
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
Does that help?
Warren Brunk - MCITP - SQL 2005, MCDBA
"CoreyB" <[email protected]> wrote in message
>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
> 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.