ASP.NET 2.0 - email

I am developing an application on my local machine in the office in asp.net 2.0 to send emails.
The application is now able to send emails to external and NOT to internal email addresses.
Do you know what is wrong please?
Thanks

Is this post not the same as the last post in this unresolved thread that you made earlier today? and pretty similar to this thread also started today?

I'm sorry I don't know the answer but people who do might may be put of by the number of posts with the same question.

Hi,
The other post was for the password recovery control. this one is for just sending a straight email from the site.
Thanks

Quote:

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Originally Posted by fmardani

I am developing an application on my local machine in the office in asp.net 2.0 to send emails.
The application is now able to send emails to external and NOT to internal email addresses.
Do you know what is wrong please?
Thanks

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Let's start with some code. And any error messages. What do the internal email addresses look like. What mail server are you using?

Hi,
The code is fine because I can send emails to external addresses.
Even the emails to the internal addresses get sent but they do not get delivered.
There is no error.
Thanks

The internal mail server may have use a feature called reverse DNS lookup.

Whereby the server looks up the ip addresses of the e-mail sender to see if it matches the IP address of the machine sending the e-mail. If they don't match it does not deliver it.

It is a common way to prevent spam, and can also be done by a smart network device.

In short, I doubt it is anything in your code.