Bulk email program has problem.

[Manoj Pandole]

Hi All,

I have made a program which uses System.Web.Mail namespace
to send mail to more than one reciepient at once. Since
the message in mail should also contain salutation to
recepient including their name, i have to send mail to
each one of them after customizing the message( adding
their name alongwith salutation before the message). I
also sent a Bcc with each mail to each of the recepient to
know that each one of them have been sent. But although i
have recieved the Bcc for each of the mails i sent. none
of my recepient have recieved the mail. Is it a problem
with sending many mail from a single email id at once,
does the servers at yahoo, or msn restrict such exercise
(many of the recepient addresses were infact yahoo or msn
ones), since all the mails come from a single email id.
Please help me out in this regard.

Regards,
Manoj Pandole