Re: SMTPMail.Send(MailMessage) - deliberately slow?
From: Supra (supra56_at_rogers.com)
Date: 07/02/04
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Date: Fri, 02 Jul 2004 13:19:18 GMT
www.vbip.com
Phill. W wrote:
>Have Our Friends in Redmond put delay loops into the
>SMTPMail.Send() method, or does it /really/ take almost a second
>to send a mail message?
>
>I've written a windows service that send emails. It was originally
>intended for /small/ volume, direct communication with our clients.
>Somebody, however, has decided they want to send a message to
>the entire client-list - nearly 200,000 entries - and, at our current
>throughput, this will take us several *days* to send (we're /peaking/
>at around 60 message a /minute/ at the moment. We've tracked the
>bottleneck down to the SMTPMail.Send( MailMessage ) method and,
>monitoring the SMTP Server at the "other end", it looks as though the
>Framework class is opening and closing a "connection" to the server for
>each and every message, which is slowing things down tremendously.
>(The SMTP Server is happily dealing with the actual send requests at
>a rate equivalent to 10 message a second, if we could monopolise it).
>
>So, are there any properties in the SMTPMail namespace (or /anything/
>else that we could configure to improve our throughput, or am I going
>to have to resort to using raw sockets and bounce through the SMTP
>protocol myself?
>
>TIA,
> Phill W.
>
>
>
>
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