I have a special application that used to use "godaddy" in sending and receiving e-mails, now it's very important to use the same software or application with integration with Exchange server 2007.....but I don't know if it is possible to do that, since I know that microsoft application always working with microsoft application only.

If it was using GoDaddy's SMTP server then you just need to know exactly what it was using - so most likely SMTP for sending email and collecting email from a mailbox in some manner. The fact that you are using Exchange doesn't stop non-Microsoft products from accessing it using standard protocols (POP3/SMTP/IMAP). Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

If it was using GoDaddy's SMTP server then you just need to know exactly what it was using - so most likely SMTP for sending email and collecting email from a mailbox in some manner. The fact that you are using Exchange doesn't stop non-Microsoft products from accessing it using standard protocols (POP3/SMTP/IMAP). Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.