Application generated email not being received by recipients

Posted on 2013-10-09
Medium Priority
Last Modified: 2014-04-25
My accounts team use an accounting package that generate emails and send via SMTP.
The software was configured with the IP address of our exchange 2003 server.
This server has been removed and replaced with a new exchange 2010 server.
The software's config was updated with the new IP of the new server.

Since the change, recipients are not receiving emails generated.
The application's support team have confirmed emails sent by the software have left their software and the SMTP is replying with a success message and will not provide us any more assistance as they claim this is a fault with our server.

We have other applications that send emails, they are all working without issue.

Where do I begin to troubleshoot this issue, I would agree with their support team that it is an issue with our Exchange 2010 server but I do not know what logs to read, or settings to change.

Any help would be greatly appreciated.
Question by:antonioking
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LVL 45

Expert Comment

ID: 39559474
It is due to Exchange 2010. You need to setup a relay connector for your application server. Then email will work
LVL 15

Expert Comment

ID: 39559475
How your applications are configured to relay through SMTP? SMTP with authentications or anonymous SMTP connection. If your application can't use authentication, you need to configure anonymous receive connector on exchange.

You can start with SMTP logs.

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Author Comment

ID: 39559673
I have an anonymous relay enabled,
SMTP logging is enabled and after sending emails via the application I cannot see anything in the logs referencing the email supposedly sent.

How frequent should the log be updating, is it real time?
LVL 15

Accepted Solution

achaldave earned 2000 total points
ID: 39559968
SMTP logs are real time, if you are not seeing anything in logs means your application is not connecting to exchange, do you have any firewall blocking smtp port between application server and exchange?

Author Comment

ID: 39559994
Nope application is on a server connected to the same domain as the exchange server and the windiws firewall is off when connected to the domain (GPO)

Author Closing Comment

ID: 40022016
There was a change needed in a configuration of the actual application.
Thank you all, for all your help.


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