473,713 Members | 2,741 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

SMTPMail.Send(M ailMessage) - deliberately slow?

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.
Nov 20 '05 #1
1 2249
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.


Nov 20 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

7
3810
by: Jason | last post by:
Hi just a really quick simple question. Can you configure SmtpMail class in C# to use a different port? or does it have to be port 25? Thanks Jason
3
3269
by: Phil Mc | last post by:
Hi has anyone come accross the problem.... with referance to System.Web.Mail.MailMessage and System.Web.Mail.SmtpMail THIS WORKS FINE mail=new MailMessage(); mail.From = "W-MyPcName.mycompany.com"; mail.To=strTo; mail.Cc=strCC; mail.Bcc=strBCC;
0
1026
by: Stewart | last post by:
Hi, I have a program which needs to send individual (customized) emails to a few thousand recipients. Using the standard approach SmtpMail/MailMessage method and Win 2000 server (SMTP service with default settings) I find it takes about 1 second per email to relay it through the SMTP service (that's not including time to sending). Why is this so slow and what can I do to speed it up? Is there a change I can make to machine.config or...
5
2151
by: ElanKathir | last post by:
Hi ! I wrote one code for Send the E-mail, But that code have some problem , So please help me Here i paste my code and Error: Error: Server Error in '/Elan_Sample' Application. --------------------------------------------------------------------------------
1
2698
by: Jens Øster | last post by:
Hi I am writing a ASP.NET web application that must sent some e-mails. I get the exception “Could not access 'CDO.Message' object” when I call SmtpMail.Send. This only happens when I send e-mail addresses out side my company walls. When the e-mail is send on some one in my company it works perfect. I think it is a relay issue. Our system administrator will not allow relaying. In the ASP.Net web.config file I let the web application...
3
9256
by: Jens | last post by:
Hi I am writing a ASP.NET web application that must sent some e-mails. I get the exception “Could not access 'CDO.Message' object” when I call SmtpMail.Send. This only happens when I send e-mail addresses out side my company walls. When the e-mail is send on some one in my company it works perfect. I think it is a relay issue. Our system administrator will not allow relaying. In the ASP.Net web.config file I let the web application...
1
2433
by: Michael | last post by:
Hello, I've read a lot of threads on this subject, but they typically go back to a problem with the smtp server configuration. In my case, everything works great until I uncomment the one line below. Once I set the BodyFormat to MailFormat.Html then I get: HttpException (0x80004005): Could not access 'CDO.Message' object Otherwise, everything works fine and I get my html tags in plain text. I've got it working (in plain text) with my...
4
7546
by: Aren Cambre | last post by:
Why does SmtpMail.Send throw an exception if the MailMessage's BodyFormat = MailFormat.Html? I've searched all over the place and cannot find a solution anywhere. I am running this on Windows XP SP2, and IIS's SMTP and WWW servers are installed. Here is the error trace: System.Web.HttpException: Could not access 'CDO.Message' object. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an...
2
1836
by: kmbarz | last post by:
I'm trying to expand my horizons here by working through an ASP.Net book. When I do the example that uses: Line 55: Mail.From = "feedback@graymad.com" Line 56: SmtpMail.SmtpServer = "localhost" Line 57: SmtpMail.Send(Mail) I get: myemail@comcast.net
0
8795
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, well explore What is ONU, What Is Router, ONU & Routers main usage, and What is the difference between ONU and Router. Lets take a closer look ! Part I. Meaning of...
0
9306
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
9168
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
0
7942
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development projectplanning, coding, testing, and deploymentwithout human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
0
5943
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
4462
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
4715
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
2
2510
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
2103
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.