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C#  - how to configure windos 2008 R2 to email using System.Net.Mail

Posted on 2013-05-29
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Last Modified: 2013-05-30
I use a simple emailing program written in .Net C# - .Net 3.5
the class I use is System.Net.Mail

the program worked fine on one server and since moving to a new 2008 R2 server does not send emails out.

I am yet to debut it - and drill and get to any errors. But before that is there any known issues or tweaks to setup in Windows Server 2008 R2 to get emailing work ?

Thanks very much in advance.
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Question by:indikad
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by:Tapan Pattanaik
Tapan Pattanaik earned 750 total points
ID: 39206485
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bigbigpig earned 750 total points
ID: 39206547
Does your code send through the local server that it executes on?  If so you'll need to set up IIS for SMTP like tapanpattanaik said.  If you send through a different server then make sure you can get to your SMTP server from your 2008 R2 server on tcp 25.

For example, if your code says this make you can get to 'smtp.mydomain.local'.  Basic telnet command will tell you (telnet smtp.mydomain.local 25).
SmtpClient client = new SmtpClient();
client.Host = "smtp.mydomain.local";

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by:indikad
ID: 39209657
Hi all,

sorry for not getting back to you soon.  I had bee debugging it and accidentally found the issue!

The network admins who were so adamant that the SMTP host address they gave me was correct , had actually given me a non working SMTP host.

all good now.

However thanks for the help and links provided and the attention give here. I will distribute points.
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