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Virtual SMTP Server - IIS 7.0 - Can't send to internal Exch 2007 server

Posted on 2013-05-28
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Last Modified: 2013-06-04
Hi experts,

I have a problem with sending email from internal IIS smtp server to internal users though exchange server.

We have a domain with Exchange 2007/windows2008, DC/Windows2008 and IIS/Windows2008 servers and around 15 PCs.

The IIS/Windows2008 has a custom app which creates an application form  and will send to exchange and users will receive. this is all happening internally.

The problem is the IIS can send email to external address (e.g gmail, yahoo) but can't send to internal address and just sits in qurere folder.so as workaround we are sending email to external address and it autoforwards to our email address but I want to avoid to do this.


It looked very similar to link below and I enabled smart host and added mx record on DNS but sill no luck.  I can confirm that port 25 is opened from IIS to exchange.

http://www.experts-exchange.com/Software/Server_Software/Web_Servers/Microsoft_IIS/Q_24293242.html
(Virtual SMTP Server - IIS 5.0 - Can't send to internal domain through local Exch 2003 server)

Any thoughts?

Yasu
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Question by:YasuYasu
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LVL 4

Expert Comment

by:rlog
ID: 39203709
What account do you use to connect to Exchange? Does this account get "login failed" or similar?
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Author Comment

by:YasuYasu
ID: 39206214
rlog

Only Anonymous access is ticked on access tab on IIS. Connection control and Relay are both "All except the list below" is selected.  

the error occurring is below and it has never been sent.

"Reporting-MTA: dns;name of our IIS server
Received-From-MTA: dns;name of our IIS server
Arrival-Date: Tue, 28 May 2013 15:07:06 +1200

Final-Recipient: rfc822;recipent address@xxx.org.nz
Action: delayed
Status: 4.4.7
Will-Retry-Until: Thu, 30 May 2013 15:08:14 +1200"

JFY, the IIS is trying to send email with PDF attachment which the size is about 100kb.

Thanks.
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Accepted Solution

by:
YasuYasu earned 0 total points
ID: 39209908
rlog,

i solve this myself. Sounds silly but I didn't restart IIS when I made any changes. After MX record is added, restarting IIS solve the problem.

Thanks for your help.

Yasu
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Author Closing Comment

by:YasuYasu
ID: 39218430
I have solved the problem myself.
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