Accessing exchange server from DMZ

[kushkhan]

Hello All,
We have a web apps that uses a XML file to send emails.
The apps was within the network and we were able to connect to our email server with the following codes.

<ExchangeLoginUser>username</ExchangeLoginUser>
<ExchangeLoginPassword>userpassword</ExchangeLoginPassword>

However we need to have our apps available on the web and we move to apps on our DMZ. Now I cannot get to my exchange server. How can I connect to my exchange server?

Thanks for your help.
Kushkhan

 

[NATD]

Kushkhan - I think you have the wrong forum This is for HIS Server which I can't really see as relating to your question.