send batch email without tying up the exchange server

Posted on 2005-04-16
Medium Priority
Last Modified: 2012-08-13
Hi...from time to time we will send out the promotion information to our clients (50,000), we would like to send this email out without tying up the exchange server, would a or a few saperated smtp server works? how to set them up without interfere the exchange inbound and outbound traffic?


Question by:fshguo
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LVL 104

Expert Comment

ID: 13799330
If you don't want to upset your existing email arrangements then you have two choices.

1. A second connection. An ADSL connection or something like that with a SMTP server connected.
2. Outsource it.

If it is 50,000 and doesn't happen too often then I would consider outsourcing the problem. What you need to be careful of is the message being labelled as spam.

Exchange MVP.

Author Comment

ID: 13820834
Thanks for the reply Simon.
We currently outsource it, but due to the cost, we are thinking of bring it in house.
Thinking of your first suggestion, in order not to upset our exchange server/internal network, let me draw a picture of the setups:
1) a new ADSL connection
2) a firewall
3) a separeted subnet behind the new ADSL
4) a stand alone Windows 2003 server with SMTP service enable or IIS installed, DNS server points to a the ISP's DNS server.
5) an outlook express point this server as an SMTP server, or  a simple ASP page to send mail.

Will this work?
Is there any limitation on how many messages to be in queue at the same time?
How would I evaluate the speed/amount of the messages being delivered?
How could it not to be labelled as SPAM by other servers?
Do I actually has to set up a separated subnet in the above steps?
What happend if the SMTP server is at the same domain as Exchange? Will it auto-change the way how Exchange server sending the email now?

Too many questions, thanks for the patient.


LVL 104

Accepted Solution

Sembee earned 2000 total points
ID: 13822848
The setup above will work from a pure technology point of view. If the machine is dedicated then it should be able to process the messages quite quickly - although the actual number will depend on the specification of the machine and the speed of the connection. In many cases an ADSL line downloads quicker than it uploads, and sending email is an upload.

However if you are shifting 50,000 messages you might want to think about purchasing a dedicated piece of software - Lyris or Listserv - something that is built for the job. It will do a much better job than Windows IIS SMTP and also give you unsubscribe and other management options.

However the major problem would be getting the email delivered.

The ISP who has provided the ADSL line may not like you using it for bulk email.

Many email providers will block the message - either because they have triggered their spam filters or because some just don't believe that a user on an ADSL line should be delivering email directly (AOL for example). They want you to send email through your ISPs server - and the ISP may take exception to this.

As for sharing the SMTP namespace - this is possible.
What you might want to consider is using a subdomain for the email server, so the message comes from unsubscribe@lists.domain.com or something similar.

Otherwise there are a number of ways to share the namespace.
Microsoft have an article on how to do it here:

I also have one on my own web site at http://www.amset.info/exchange/smtp-sharing.asp

Exchange MVP.

Author Comment

ID: 13839885
Thanks Simon for the recommendation. It looks like the "MailEngine" from Lyris right meets our needs.

Does anyone have any comments or experience on using MailEngine for serious business requirement?

LVL 104

Expert Comment

ID: 13840463
I did a Lyris install for a client about 18 months ago.
Gave it a dedicated machine and it was fine. Sent out 30,000 messages in about 2 hours. (It might have done it quicker than that, I wasn't watching too carefully).


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