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distribution list exchange smarthost messages bounced back server 2003 way around limit

Posted on 2009-05-03
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Last Modified: 2013-11-30
Hello,

Exchange 2003 server 2003
emails solo go out fine.  but when we email a large amount of clients via a distribution list we are getting bouncebacks.  4.4.7 and they are from different domains.  people which we have no problems emailing solo.  seems like the root of the problem is that I have a smarthost setup via smtp virtual server.  

I'd like to keep the smarthost & still be able to use the distribution lists that users create.  is this possible?  could i nest them or divide them somehow & that would allow them out through the smarthost?  thanks
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Question by:salliecookies
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Mestha earned 500 total points
ID: 24294922
You shouldn't have a smart host set on the SMTP virtual server at all. It should be set on an SMTP Connector. However if the smart host operator has a limit on the number of messages sent in one go then you may well find it hard to get around the problem.
You could try multiple distribution lists in a nested format, but Exchange is very poor a bulk emailing. A bulk email tool would be a better option, or even outsource it to an external provider.

Simon.
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by:salliecookies
ID: 24297546
I spoke with the ISP today basically they are phasing out relay through their server.  This is why distro list appears to not work.  They are probably limiting amount of mesages.  

I like the simplicity of mail relayed to ISP.  Most things I've read suggest to do the smarthosting that's why I never changed it.  It is under the virtual server.  If I set it up via Routing Group (SMTP connector) instead of the virtual server & attempt to use dns with redunancy of smarthost if mail fails to be delivered?  or would you suggest dropping altogether & using dns which I'm leaning toward.  

What concerns should I have when I remove smarthost & route mail via dns?  will i notice problems immediately?  I don't have wins setup on this server & it was on a different subnet but i changed it back to the correct class.  

Bulk emails being sent out are anywhere from 20 contacts to 120 at most.  They are all people the company communicates regularly with.  If you still feel the bulk email tools or external provider would be better served do you have any suggestions?  

I appreciate your imput thanks!
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by:Mestha
ID: 24299912
As long as you are on a static IP address and have a reverse DNS/PTR record set on the reverse DNS, then you should be able to send email directly. There is no problem with that.
If remote sites have a problem with your server sending directly the emails should be NDR'd back to the sender with some text as to why, which you then need to resolve. The only way to know is to try it.

You will need to remove the smart host from the SMTP virtual server and put it on to an SMTP Connector. That then gives you control over the email.

Simon.
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by:salliecookies
ID: 24300954
I have had a static ip & rever ptr setup for a while.  I'll migrate from the virtual server over to the smtp connector.  
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